Our search engine currently supports over 3500 objects which could be found from the list below. The list is sorted alphabetically,
just click the caret beside to unfold all the objects starting with that letter.
- A
- aardvark, ant bear, anteater, Orycteropus afer
- aardwolf, Proteles cristata
- abalone, ear-shell
- abandoned ship, derelict
- abaya
- Aberdeen Angus, Angus, black Angus
- abrader, abradant
- abrading stone
- abrocome, chinchilla rat, rat chinchilla
- abstraction, abstract entity
- Abyssinian, Abyssinian cat
- academic gown, academic robe, judge's robe
- acanthocephalan, spiny-headed worm
- acarid
- acarine
- acarus, genus Acarus
- accentor
- accessory fruit, pseudocarp
- accessory, accoutrement, accouterment
- accordion, piano accordion, squeeze box
- acerola, barbados cherry, surinam cherry, West Indian cherry
- achene
- ackee, akee
- acorn
- acorn barnacle, rock barnacle, Balanus balanoides
- addax, Addax nasomaculatus
- adder, common viper, Vipera berus
- adelgid
- Adelie, Adelie penguin, Pygoscelis adeliae
- adjutant bird, adjutant, adjutant stork, Leptoptilus dubius
- admiral
- adz, adze
- Aegypiidae, family Aegypiidae
- Aegyptopithecus
- affenpinscher, monkey pinscher, monkey dog
- Afghan hound, Afghan
- African chameleon, Chamaeleo chamaeleon
- African clawed frog, Xenopus laevis
- African coral snake, Aspidelaps lubricus
- African crocodile, Nile crocodile, Crocodylus niloticus
- African elephant, Loxodonta africana
- African grey, African gray, Psittacus erithacus
- African hunting dog, hyena dog, Cape hunting dog, Lycaon pictus
- African monitor, Varanus niloticus
- African wild ass, Equus asinus
- Africander
- Africanized bee, Africanized honey bee, killer bee, Apis mellifera scutellata, Apis mellifera adansonii
- afropavo, Congo peafowl, Afropavo congensis
- agama
- agamid, agamid lizard
- aggregate fruit, multiple fruit, syncarp
- agouti, Dasyprocta aguti
- agua, agua toad, Bufo marinus
- aircraft
- aircraft carrier, carrier, flattop, attack aircraft carrier
- Airedale, Airedale terrier
- airplane, aeroplane, plane
- airship, dirigible
- Alaskan brown bear, Kodiak bear, Kodiak, Ursus middendorffi, Ursus arctos middendorffi
- albacore, long-fin tunny, Thunnus alalunga
- albatross, mollymawk
- alderfly, alder fly, Sialis lutaria
- alewife, Alosa pseudoharengus, Pomolobus pseudoharengus
- algarroba, algarrobilla, algarobilla
- alley cat
- allice shad, allis shad, allice, allis, Alosa alosa
- alligator lizard
- alligator snapping turtle, alligator snapper, Macroclemys temmincki
- alligator, gator
- allosaur, allosaurus
- almond
- almond moth, fig moth, Cadra cautella
- alpaca, Lama pacos
- alpine salamander, Salamandra atra
- Alsophila pometaria
- amaranth
- amazon
- Amazon ant, Polyergus rufescens
- amberjack, amberfish
- ambulance
- ambystomid, ambystomid salamander
- American alligator, Alligator mississipiensis
- American badger, Taxidea taxus
- American bison, American buffalo, buffalo, Bison bison
- American bittern, stake driver, Botaurus lentiginosus
- American black bear, black bear, Ursus americanus, Euarctos americanus
- American chameleon, anole, Anolis carolinensis
- American cockroach, Periplaneta americana
- American coot, marsh hen, mud hen, water hen, Fulica americana
- American crayfish
- American egret, great white heron, Egretta albus
- American flying squirrel
- American foxhound
- American gallinule, Porphyrula martinica
- American green toad, Bufo debilis
- American lady crab, lady crab, calico crab, Ovalipes ocellatus
- American lobster, Northern lobster, Maine lobster, Homarus americanus
- American magpie, Pica pica hudsonia
- American marten, American sable, Martes americana
- American merganser, Mergus merganser americanus
- American organ
- American plaice, Hippoglossoides platessoides
- American red squirrel, spruce squirrel, red squirrel, Sciurus hudsonicus, Tamiasciurus hudsonicus
- American saddle horse
- American shrew mole, Neurotrichus gibbsii
- American smooth dogfish, Mustelus canis
- American Staffordshire terrier, Staffordshire terrier, American pit bull terrier, pit bull terrier
- American toad, Bufo americanus
- American water ouzel, Cinclus mexicanus
- American water shrew, Sorex palustris
- American water spaniel
- American woodcock, woodcock snipe, Philohela minor
- amethystine python
- amphibian, amphibious vehicle
- amphipod
- amphiuma, congo snake, congo eel, blind eel
- anaconda, Eunectes murinus
- anapsid, anapsid reptile
- anaspid
- anchovy
- anchovy pear, river pear
- Andean condor, Vultur gryphus
- andrena, andrenid, mining bee
- anemone fish
- angel shark, angelfish, Squatina squatina, monkfish
- angelfish
- anglewing
- Angora, Angora cat
- Angora, Angora goat
- Angora, Angora rabbit
- anguid lizard
- angwantibo, golden potto, Arctocebus calabarensis
- ani
- ankylosaur, ankylosaurus
- annelid, annelid worm, segmented worm
- anoa, dwarf buffalo, Anoa depressicornis
- anomalops, flashlight fish
- anopheline
- ant bear, giant anteater, great anteater, tamanoir, Myrmecophaga jubata
- ant cow
- ant lion, antlion, antlion fly
- ant shrike
- ant thrush
- ant, emmet, pismire
- antbird, ant bird
- anteater, New World anteater
- antelope squirrel, whitetail antelope squirrel, antelope chipmunk, Citellus leucurus
- anthropoid
- anthropoid ape
- anti-G suit, G suit
- antler moth, Cerapteryx graminis
- ao dai
- aoudad, arui, audad, Barbary sheep, maned sheep, Ammotragus lervia
- apar, three-banded armadillo, Tolypeutes tricinctus
- apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsus
- ape
- aperea, wild cavy, Cavia porcellus
- aphid
- aphid lion, aphis lion
- apodiform bird
- Appaloosa
- Appenzeller
- apple
- apple aphid, green apple aphid, Aphis pomi
- apple maggot, railroad worm, Rhagoletis pomonella
- appointment, fitting
- apricot
- apron
- Arabian camel, dromedary, Camelus dromedarius
- Arabian, Arab
- arch
- archaeopteryx, archeopteryx, Archaeopteryx lithographica
- archaeornis
- archerfish, Toxotes jaculatrix
- archiannelid
- Archilochus colubris
- architeuthis, giant squid
- Arctic fox, white fox, Alopex lagopus
- Arctic ground squirrel, parka squirrel, Citellus parryi
- arctiid, arctiid moth
- area
- argali, argal, Ovis ammon
- argentine
- argentinosaur
- argus, argus pheasant
- ark
- ark shell
- Arkansas kingbird, western kingbird
- arm guard, arm pad
- armadillo
- armament
- armor plate, armour plate, armor plating, plate armor, plate armour
- armored catfish
- armored dinosaur
- armored scale
- armored vehicle, armoured vehicle
- army ant, driver ant, legionary ant
- armyworm, army worm, Pseudaletia unipuncta
- armyworm, Pseudaletia unipuncta
- arrowworm, chaetognath
- ascidian tadpole
- Asian black grouse, Lyrurus mlokosiewiczi
- Asian crocodile, Crocodylus porosus
- Asian horseshoe crab
- Asian longhorned beetle, Anoplophora glabripennis
- Asian tiger mosquito, Aedes albopictus
- Asian wild ox
- Asiatic black bear, black bear, Ursus thibetanus, Selenarctos thibetanus
- Asiatic flying squirrel
- Asiatic shrew mole, Uropsilus soricipes
- asp, asp viper, Vipera aspis
- asp, Egyptian cobra, Naja haje
- ass
- assassin bug, reduviid
- Atlantic bottlenose dolphin, Tursiops truncatus
- Atlantic cod, Gadus morhua
- Atlantic croaker, Micropogonias undulatus
- Atlantic halibut, Hippoglossus hippoglossus
- Atlantic herring, Clupea harengus harengus
- Atlantic manta, Manta birostris
- Atlantic puffin, Fratercula arctica
- Atlantic ridley, bastard ridley, bastard turtle, Lepidochelys kempii
- Atlantic salmon, Salmo salar
- Atlantic sea bream, Archosargus rhomboidalis
- Atlantic spiny dogfish, Squalus acanthias
- Atlantic tripletail, Lobotes surinamensis
- Atlantic walrus, Odobenus rosmarus
- atlas moth, Atticus atlas
- attachment, bond
- attack dog
- attire, garb, dress
- attribute
- Audubon's caracara, Polyborus cheriway audubonii
- Audubon's warbler, Audubon warbler, Dendroica auduboni
- auk
- aurochs, urus, Bos primigenius
- Australian blacksnake, Pseudechis porphyriacus
- Australian cockroach, Periplaneta australasiae
- Australian coral snake, Rhynchoelaps australis
- Australian magpie
- Australian sea lion, Zalophus lobatus
- Australian terrier
- Australian turtledove, turtledove, Stictopelia cuneata
- australopithecine
- Australopithecus afarensis
- Australopithecus africanus
- Australopithecus boisei
- Australopithecus robustus
- autogiro, autogyro, gyroplane
- avadavat, amadavat
- avocado, alligator pear, avocado pear, aguacate
- avocet
- awl
- ax, axe
- axolotl, mud puppy, Ambystoma mexicanum
- aye-aye, Daubentonia madagascariensis
- Ayrshire
- B
- baa-lamb
- babassu nut
- babbler, cackler
- babirusa, babiroussa, babirussa, Babyrousa Babyrussa
- baboon
- baby bed, baby's bed
- baby buggy, baby carriage, carriage, perambulator, pram, stroller, go-cart, pushchair, pusher
- backswimmer, Notonecta undulata
- Bactrian camel, Camelus bactrianus
- badger
- badminton racket, badminton racquet, battledore
- baggage car, luggage van
- bagpipe
- balalaika
- bald eagle, American eagle, Haliaeetus leucocephalus
- bald-faced hornet, white-faced hornet, Vespula maculata
- baleen whale, whalebone whale
- ball
- balloon
- balloonfish, Diodon holocanthus
- balsam woolly aphid, Adelges piceae
- Baltimore oriole, Baltimore bird, hangbird, firebird, Icterus galbula galbula
- banana
- banana boat
- band-tailed pigeon, band-tail pigeon, bandtail, Columba fasciata
- banded gecko
- banded palm civet, Hemigalus hardwickii
- banded purple, white admiral, Limenitis arthemis
- bandicoot
- bandicoot rat, mole rat
- bandsaw, band saw
- baneberry
- banjo
- bank martin, bank swallow, sand martin, Riparia riparia
- bantam
- banteng, banting, tsine, Bos banteng
- Barbados gooseberry, blade apple
- Barbary ape, Macaca sylvana
- barbecue pit
- barbet
- barge pole
- barge, flatboat, hoy, lighter
- baritone, baritone horn
- bark beetle
- barking frog, robber frog, Hylactophryne augusti
- barleycorn
- barn owl, Tyto alba
- barn spider, Araneus cavaticus
- barn swallow, chimney swallow, Hirundo rustica
- barnacle goose, barnacle, Branta leucopsis
- barnacle, cirriped, cirripede
- barndoor skate, Raja laevis
- baronduki, baranduki, barunduki, burunduki, Eutamius asiaticus, Eutamius sibiricus
- barosaur, barosaurus
- barracouta, snoek
- barracuda
- barred owl, Strix varia
- barrelfish, black rudderfish, Hyperglyphe perciformis
- barren ground caribou, Rangifer arcticus
- baseball bat, lumber
- basenji
- basilisk
- basking shark, Cetorhinus maximus
- bass
- bass horn, sousaphone, tuba
- bassarisk, cacomistle, cacomixle, coon cat, raccoon fox, ringtail, ring-tailed cat, civet cat, miner's cat, Bassariscus astutus
- basset, basset hound
- bassoon
- baster
- bat
- batfish
- bathrobe
- baton
- baton, wand
- bay
- bay scallop, Pecten irradians
- baya, Ploceus philippinus
- beaded lizard, Mexican beaded lizard, Heloderma horridum
- beagle
- beaked salmon, sandfish, Gonorhynchus gonorhynchus
- beaked whale
- bean
- bean weevil, Acanthoscelides obtectus
- bear
- beard worm, pogonophoran
- bearded seal, squareflipper square flipper, Erignathus barbatus
- bearded vulture, lammergeier, lammergeyer, Gypaetus barbatus
- beater
- beating-reed instrument, reed instrument, reed
- beaugregory, Pomacentrus leucostictus
- beaver
- bed
- bedbug, bed bug, chinch, Cimex lectularius
- Bedlington terrier
- bedroom furniture
- bedstead, bedframe
- bee
- bee eater
- bee fly
- bee moth, wax moth, Galleria mellonella
- beechnut
- beef, beef cattle
- beet armyworm, Spodoptera exigua
- belaying pin
- Belgian hare, leporide
- Belgian sheepdog, Belgian shepherd
- bellbird
- belt
- belted kingfisher, Ceryle alcyon
- beluga, hausen, white sturgeon, Acipenser huso
- bench
- bender
- Bernese mountain dog
- berry
- betel nut, areca nut
- bettong
- bevel, bevel square
- Bewick's swan, Cygnus columbianus bewickii
- bezoar goat, pasang, Capra aegagrus
- bicycle, bike, wheel, cycle
- big brown bat, Eptesicus fuscus
- big cat, cat
- bigeye
- bigeye scad, big-eyed scad, goggle-eye, Selar crumenophthalmus
- bighorn, bighorn sheep, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep, Ovis canadensis
- bikini, two-piece
- billfish
- billy, billy goat, he-goat
- binturong, bearcat, Arctictis bintourong
- biohazard suit
- bird dog
- bird louse, biting louse, louse
- bird of paradise
- bison
- bit
- bitch
- bittern
- bivalve, pelecypod, lamellibranch
- black and gold garden spider, Argiope aurantia
- black bass
- black bee, German bee
- black bream, Chrysophrys australis
- black carpet beetle
- black crappie, Pomoxis nigromaculatus
- black currant
- black duck, Anas rubripes
- black fox
- black grouse
- black guillemot, Cepphus grylle
- black kite, Milvus migrans
- black marlin, Makaira mazara, Makaira marlina
- black olive, ripe olive
- black rat snake, blacksnake, pilot blacksnake, mountain blacksnake, Elaphe obsoleta
- black rat, roof rat, Rattus rattus
- black rhinoceros, Diceros bicornis
- black sheep
- black squirrel
- black stork, Ciconia nigra
- black swan, Cygnus atratus
- black turnstone, Arenaria-Melanocephala
- black vulture, Aegypius monachus
- black vulture, carrion crow, Coragyps atratus
- black widow, Latrodectus mactans
- black-and-tan coonhound
- black-backed gull, great black-backed gull, cob, Larus marinus
- black-billed cuckoo, Coccyzus erythropthalmus
- black-capped chickadee, blackcap, Parus atricapillus
- black-crowned night heron, Nycticorax nycticorax
- black-footed albatross, gooney, gooney bird, goonie, goony, Diomedea nigripes
- black-footed ferret, ferret, Mustela nigripes
- black-headed snake
- black-necked cobra, spitting cobra, Naja nigricollis
- black-necked grebe, eared grebe, Podiceps nigricollis
- black-necked stilt, Himantopus mexicanus
- black-winged stilt, Himantopus himantopus
- blackberry
- blackbird, merl, merle, ouzel, ousel, European blackbird, Turdus merula
- blackboard eraser
- blackbuck, black buck, Antilope cervicapra
- Blackburn, Blackburnian warbler, Dendroica fusca
- blackcap, Silvia atricapilla
- blackcock, black cock
- blackfish
- blackfly, bean aphid, Aphis fabae
- blackfly, black fly, buffalo gnat
- blackmouth bass, Synagrops bellus
- blackpoll, Dendroica striate
- blacksnake, black racer, Coluber constrictor
- blacktail jackrabbit, Lepus californicus
- blacktail prairie dog, Cynomys ludovicianus
- blacktip shark, sandbar shark, Carcharhinus limbatus
- bladder worm
- bleeding tooth, Nerita peloronta
- blender, liquidizer, liquidiser
- blennioid fish, blennioid
- blenny, combtooth blenny
- blind snake, worm snake
- blindworm, slowworm, Anguis fragilis
- blister beetle, meloid
- blood clam
- bloodhound, sleuthhound
- bloodworm
- blowfly, blow fly
- bludgeon
- blue
- blue crab, Callinectes sapidus
- blue goose, Chen caerulescens
- blue marlin, Makaira nigricans
- blue mockingbird, Melanotis caerulescens
- blue peafowl, Pavo cristatus
- blue shark, great blue shark, Prionace glauca
- blue tit, tomtit, Parus caeruleus
- blue whale, sulfur bottom, Balaenoptera musculus
- blue-headed vireo, Vireo solitarius solitarius
- blueberry
- bluebird
- bluebottle, Calliphora vicina
- bluefin, bluefin tuna, horse mackerel, Thunnus thynnus
- bluefish, Pomatomus saltatrix
- bluegill, Lepomis macrochirus
- bluehead, Thalassoma bifasciatum
- bluethroat, Erithacus svecicus
- bluetick
- bluewing, blue-winged teal, Anas discors
- boa
- boa constrictor, Constrictor constrictor
- boar
- boarfish
- boarfish, Capros aper
- boarhound
- boatbill, boat-billed heron, broadbill, Cochlearius cochlearius
- bobcat, bay lynx, Lynx rufus
- bobolink, ricebird, reedbird, Dolichonyx oryzivorus
- bobwhite, bobwhite quail, partridge
- bodkin, threader
- body armor, body armour, suit of armor, suit of armour, coat of mail, cataphract
- body louse, cootie, Pediculus corporis
- body pad
- body stocking
- bogy, bogie, bogey
- Bohemian waxwing, Bombycilla garrulus
- boll weevil, Anthonomus grandis
- bollworm
- bolt
- bolt cutter
- bolt, deadbolt
- bombardier beetle
- bombycid, bombycid moth, silkworm moth
- bonduc nut, nicker nut, nicker seed
- bone-headed dinosaur
- bonefish, Albula vulpes
- bones, castanets, clappers, finger cymbals
- bongo, Tragelaphus eurycerus, Boocercus eurycerus
- bonito
- bonito shark, blue pointed, Isurus glaucus
- bonito, oceanic bonito, Katsuwonus pelamis
- bonnet macaque, bonnet monkey, capped macaque, crown monkey, Macaca radiata
- booby
- bookcase
- booklouse, book louse, deathwatch, Liposcelis divinatorius
- boom, microphone boom
- bootstrap
- Border collie
- Border terrier
- borzoi, Russian wolfhound
- Boston bull, Boston terrier
- botfly
- bottlenose dolphin, bottle-nosed dolphin, bottlenose
- Bouvier des Flandres, Bouviers des Flandres
- bow
- bowed stringed instrument, string
- bowerbird, catbird
- bowfin, grindle, dogfish, Amia calva
- bowhead, bowhead whale, Greenland whale, Balaena mysticetus
- box turtle, box tortoise
- box, box seat
- boxer
- boxfish, trunkfish
- boysenberry
- bracer, armguard
- brachiopod, lamp shell, lampshell
- brachyuran
- Brahman, Brahma, Brahmin, Bos indicus
- brambling, Fringilla montifringilla
- branchiopod crustacean, branchiopod, branchiopodan
- brant, brant goose, brent, brent goose
- brass knucks, knucks, brass knuckles, knuckles, knuckle duster
- brass, brass instrument
- brassiere, bra, bandeau
- brazil nut, brazil
- breadfruit
- breechcloth, breechclout, loincloth
- brewer's mole, hair-tailed mole, Parascalops breweri
- briard
- bridge, span
- brill, Scophthalmus rhombus
- brine shrimp, Artemia salina
- brisling, sprat, Clupea sprattus
- bristletail
- brit, britt
- Brittany spaniel
- broad bean, fava bean, horsebean
- broadbill
- broadtail, caracul, karakul
- brocket
- brocket
- broiler
- brook trout, speckled trout, Salvelinus fontinalis
- broom
- brotula
- brown bat
- brown bear, bruin, Ursus arctos
- brown bullhead
- brown creeper, American creeper, Certhia americana
- brown hyena, strand wolf, Hyaena brunnea
- brown lacewing, hemerobiid, hemerobiid fly
- brown lemming, Lemmus trimucronatus
- brown rat, Norway rat, Rattus norvegicus
- brown snail, Helix aspersa
- Brown Swiss
- brown trout, salmon trout, Salmo trutta
- browntail, brown-tail moth, Euproctis phaeorrhoea
- bruin
- brunch coat
- brush
- brush turkey, Alectura lathami
- brush-tailed phalanger, Trichosurus vulpecula
- brush-tailed porcupine, brush-tail porcupine
- bubble shell
- buckeye, horse chestnut, conker
- buckskin
- buckthorn berry, yellow berry
- budgerigar, budgereegah, budgerygah, budgie, grass parakeet, lovebird, shell parakeet, Melopsittacus undulatus
- buff, buffer
- buffalo carpet beetle, Anthrenus scrophulariae
- buffalo fish, buffalofish
- buffer, polisher
- buffet, counter, sideboard
- bufflehead, butterball, dipper, Bucephela albeola
- bufo
- bug
- bugle
- building material
- building, edifice
- bull
- bull mastiff
- bull shark, cub shark, Carcharhinus leucas
- bull snake, bull-snake
- bulldog ant
- bulldog, English bulldog
- bullfinch, Pyrrhula pyrrhula
- bullfrog, Rana catesbeiana
- bullhead
- bullhead, bullhead catfish
- Bullock's oriole, Icterus galbula bullockii
- bullterrier, bull terrier
- bumblebee, humblebee
- bumboat
- bumper car, Dodgem
- bumper jack
- bunny, bunny rabbit
- bunting
- bunya bunya
- burbot, eelpout, ling, cusk, Lota lota
- Burmese cat
- burqa, burka
- burr
- burrfish
- burro
- bus, autobus, coach, charabanc, double-decker, jitney, motorbus, motorcoach, omnibus, passenger vehicle
- bush shrike
- bushbuck, guib, Tragelaphus scriptus
- bushtit, bush tit
- bustard
- butcherbird
- butcherbird
- buteonine
- butterfish, stromateid fish, stromateid
- butterfly
- butterfly fish
- butterfly ray
- butternut
- button quail, button-quail, bustard quail, hemipode
- buzzard, Buteo buteo
- buzzard, turkey buzzard, turkey vulture, Cathartes aura
- C
- cabbage butterfly
- cabbageworm, Pieris rapae
- caber
- cabin car, caboose
- cabin cruiser, cruiser, pleasure boat, pleasure craft
- cabinet
- cable car, car
- cacique, cazique
- cactus mouse, Peromyscus eremicus
- cactus wren
- caecilian, blindworm
- caiman lizard
- caiman, cayman
- cairn, cairn terrier
- caisson
- calabar bean, ordeal bean
- California condor, Gymnogyps californianus
- California newt, Taricha torosa
- California quail, Lofortyx californicus
- California sea lion, Zalophus californianus, Zalophus californicus
- California whipsnake, striped racer, Masticophis lateralis
- calliope, steam organ
- calosoma
- camel
- camisole
- camisole, underbodice
- Canada jay, grey jay, gray jay, camp robber, whisker jack, Perisoreus canadensis
- Canada lynx, Lynx canadensis
- canal boat, narrow boat, narrowboat
- canary, canary bird
- candlenut
- candlesnuffer
- canistel, eggfruit
- cankerworm
- canoe
- cantaloup, cantaloupe
- canvasback, canvasback duck, Aythya valisineria
- canyon treefrog, Hyla arenicolor
- cap
- Cape buffalo, Synercus caffer
- Cape lobster, Homarus capensis
- Cape May warbler, Dendroica tigrina
- capelin, capelan, caplin
- capercaillie, capercailzie, horse of the wood, Tetrao urogallus
- capon
- caprimulgiform bird
- capuchin, ringtail, Cebus capucinus
- capybara, capibara, Hydrochoerus hydrochaeris
- car carrier
- car, auto, automobile, machine, motorcar
- car, railcar, railway car, railroad car
- carabao
- caracal, desert lynx, Lynx caracal
- caracara
- carambola, star fruit
- carancha, Polyborus plancus
- carangid fish, carangid
- Cardigan, Cardigan Welsh corgi
- cardinal tetra, Paracheirodon axelrodi
- cardinal, cardinal grosbeak, Richmondena Cardinalis, Cardinalis cardinalis, redbird
- cardinalfish
- cargo ship, cargo vessel
- caribou, reindeer, Greenland caribou, Rangifer tarandus
- carillon
- carinate, carinate bird, flying bird
- Carniolan bee
- carnivorous bat, microbat
- carob, carob bean, algarroba bean, algarroba, locust bean, locust pod
- Carolina chickadee, Parus carolinensis
- Carolina parakeet, Conuropsis carolinensis
- Carolina wren, Thryothorus ludovicianus
- carp
- carpenter ant
- carpenter bee
- carpenter's level
- carpet beetle, carpet bug
- carpet moth, tapestry moth, Trichophaga tapetzella
- carpet shark, Orectolobus barbatus
- carpet snake, Python variegatus, Morelia spilotes variegatus
- carpet sweeper, sweeper
- carthorse, cart horse, drayhorse
- casaba, casaba melon
- cascades frog, Rana cascadae
- case
- casemaking clothes moth, Tinea pellionella
- caseworm
- cashew, cashew nut
- Cashmere goat, Kashmir goat
- Cassin's kingbird, Tyrannus vociferans
- cassowary
- castor bean
- cat flea, Ctenocephalides felis
- catalufa, Priacanthus arenatus
- catbird, grey catbird, gray catbird, Dumetella carolinensis
- catcher's mask
- caterpillar
- catfish, siluriform fish
- catostomid
- cattalo, beefalo
- cattle egret, Bubulcus ibis
- cattle, cows, kine, oxen, Bos taurus
- causal agent, cause, causal agency
- cavalry horse
- cave myotis, Myotis velifer
- cavy
- cayuse, Indian pony
- cecropia, cecropia moth, Hyalophora cecropia
- cedar waxwing, cedarbird, Bombycilla cedrorun
- celesta
- cellar, wine cellar
- cembra nut, cedar nut
- central chimpanzee, Pan troglodytes troglodytes
- cephalopod, cephalopod mollusk
- ceratopsian, horned dinosaur
- ceratosaur, ceratosaurus
- cercaria
- ceriman, monstera
- cero, pintado, kingfish, Scomberomorus regalis
- cetacean, cetacean mammal, blower
- chachalaca
- chacma, chacma baboon, Papio ursinus
- chaetodon
- chaffinch, Fringilla coelebs
- chafing dish
- chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour
- chain pickerel, chain pike, Esox niger
- chain saw, chainsaw
- chair
- chalcid fly, chalcidfly, chalcid, chalcid wasp
- chalk
- chambered nautilus, pearly nautilus, nautilus
- chameleon tree frog
- chameleon, chamaeleon
- chamois, Rupicapra rupicapra
- channel catfish, channel cat, Ictalurus punctatus
- chanter, melody pipe
- chap
- char, charr
- characin, characin fish, characid
- charger, courser
- Charolais
- checkered whiptail, Cnemidophorus tesselatus
- cheekpiece
- cheese cutter
- cheetah, chetah, Acinonyx jubatus
- chelonian, chelonian reptile
- chemise, shimmy, shift, slip, teddy
- cherry
- cherrystone, cherrystone clam
- Chesapeake Bay retriever
- chest of drawers, chest, bureau, dresser
- chest protector
- chestnut
- chestnut
- Cheviot
- chevrotain, mouse deer
- chewink, cheewink, Pipilo erythrophthalmus
- chickadee
- chicken hawk, hen hawk
- chicken roundworm, Ascaridia galli
- chicken snake
- chicken, Gallus gallus
- chickeree, Douglas squirrel, Tamiasciurus douglasi
- chickpea, garbanzo
- chigoe, chigger, chigoe flea, Tunga penetrans
- Chihuahua
- Chihuahuan spotted whiptail, Cnemidophorus exsanguis
- Chile bonito, Chilean bonito, Pacific bonito, Sarda chiliensis
- chime, bell, gong
- chimney swift, chimney swallow, Chateura pelagica
- chimpanzee, chimp, Pan troglodytes
- chin strap
- chincapin, chinkapin, chinquapin
- chinchilla, Chinchilla laniger
- Chinese alligator, Alligator sinensis
- Chinese goose, Anser cygnoides
- Chinese paddlefish, Psephurus gladis
- chinning bar
- chinook, chinook salmon, king salmon, quinnat salmon, Oncorhynchus tshawytscha
- chipmunk
- chipping sparrow, Spizella passerina
- chisel
- chiton, coat-of-mail shell, sea cradle, polyplacophore
- chokecherry
- chordophone
- chorus frog
- chough
- chow, chow chow
- chub mackerel, tinker, Scomber japonicus
- chub, Leuciscus cephalus
- chuck-will's-widow, Caprimulgus carolinensis
- chuckwalla, Sauromalus obesus
- chunga, seriema, Chunga burmeisteri
- cicada, cicala
- cichlid, cichlid fish
- cigar cutter
- cinnabar, cinnabar moth, Callimorpha jacobeae
- circular saw, buzz saw
- cisco, lake herring, Coregonus artedi
- citrange
- citron
- citrophilous mealybug, citrophilus mealybug, Pseudococcus fragilis
- citrus mealybug, Planococcus citri
- citrus whitefly, Dialeurodes citri
- citrus, citrus fruit, citrous fruit
- civet, civet cat
- clam
- clamp, clinch
- clarinet
- Clark's nutcracker, Nucifraga columbiana
- clavichord
- clavier, Klavier
- clay-colored robin, Turdus greyi
- cleaning implement, cleaning device, cleaning equipment
- clerid beetle, clerid
- click beetle, skipjack, snapping beetle
- cliff swallow, Hirundo pyrrhonota
- climbing perch, Anabas testudineus, A. testudineus
- climbing salamander
- clincher
- clingfish
- clinid, clinid fish
- cloak
- cloth covering
- clothes dryer, clothes drier
- clothes moth
- clothes tree, coat tree, coat stand
- club
- clumber, clumber spaniel
- clupeid fish, clupeid
- Clydesdale
- coach horse
- coachwhip, coachwhip snake, Masticophis flagellum
- coastal diving bird
- coat
- coati, coati-mondi, coati-mundi, coon cat, Nasua narica
- cob
- cob
- cobia, Rachycentron canadum, sergeant fish
- cobra
- coccid insect
- cochin, cochin china
- cochineal insect, cochineal, Dactylopius coccus
- cock
- cock of the rock, Rupicola peruviana
- cock of the rock, Rupicola rupicola
- cock, rooster
- cockateel, cockatiel, cockatoo parrot, Nymphicus hollandicus
- cockatoo
- cockchafer, May bug, May beetle, Melolontha melolontha
- cocker spaniel, English cocker spaniel, cocker
- cockle
- cockleshell
- cockroach, roach
- coconut, cocoanut
- cod, codfish
- codling
- codling moth, codlin moth, Carpocapsa pomonella
- coffee bean, coffee berry, coffee
- coffee maker
- coho, cohoe, coho salmon, blue jack, silver salmon, Oncorhynchus kisutch
- cohune nut
- collar
- collared lizard
- collared peccary, javelina, Tayassu angulatus, Tayassu tajacu, Peccari angulatus
- collared pika, Ochotona collaris
- collection, aggregation, accumulation, assemblage
- collembolan, springtail
- collie
- colobus, colobus monkey
- Colorado potato beetle, Colorado beetle, potato bug, potato beetle, Leptinotarsa decemlineata
- columbian mammoth, Mammuthus columbi
- columbiform bird
- comb
- comb-footed spider, theridiid
- comma, comma butterfly, Polygonia comma
- common American shad, Alosa sapidissima
- common dolphin, Delphinus delphis
- common eel, freshwater eel
- common eland, Taurotragus oryx
- common garter snake, Thamnophis sirtalis
- common iguana, iguana, Iguana iguana
- common kingsnake, Lampropeltis getulus
- common limpet, Patella vulgata
- common louse, Pediculus humanus
- common lynx, Lynx lynx
- common mackerel, shiner, Scomber scombrus
- common mosquito, Culex pipiens
- common murre, Uria aalge
- common newt, Triturus vulgaris
- common nutcracker, Nucifraga caryocatactes
- common opossum, Didelphis virginiana, Didelphis marsupialis
- common raccoon, common racoon, coon, ringtail, Procyon lotor
- common roundworm, Ascaris lumbricoides
- common shiner, silversides, Notropis cornutus
- common shrew, Sorex araneus
- common snapping turtle, snapper, Chelydra serpentina
- common spoonbill, Platalea leucorodia
- common starling, Sturnus vulgaris
- common wallaby, Macropus agiles
- common wasp, Vespula vulgaris
- common water snake, banded water snake, Natrix sipedon, Nerodia sipedon
- common zebra, Burchell's zebra, Equus Burchelli
- compound lever
- Comstock mealybug, Comstock's mealybug, Pseudococcus comstocki
- concertina
- conch
- condor
- conenose, cone-nosed bug, conenose bug, big bedbug, kissing bug
- conger, conger eel
- connecting rod
- conodont
- constrictor
- container
- control rod
- cooker
- cookie cutter
- cookie sheet, baking tray
- cooking utensil, cookware
- cookstove
- coondog
- coonhound
- Cooper's hawk, blue darter, Accipiter cooperii
- coot
- cooter, river cooter, Pseudemys concinna
- copepod, copepod crustacean
- copper
- copper rockfish, Sebastodes caurinus
- copperhead, Agkistrodon contortrix
- copperhead, Denisonia superba
- copperware
- coquilla nut
- coraciiform bird
- coracle
- coral snake, harlequin-snake, New World coral snake
- coral snake, Old World coral snake
- corbina, Menticirrhus undulatus
- core
- coreid bug, coreid
- corgi, Welsh corgi
- cormorant, Phalacrocorax carbo
- corn borer, European corn borer moth, corn borer moth, Pyrausta nubilalis
- corn borer, Pyrausta nubilalis
- corn earworm, cotton bollworm, tomato fruitworm, tobacco budworm, vetchworm, Heliothis zia
- corn snake, red rat snake, Elaphe guttata
- corncrake, land rail, Crex crex
- cornet, horn, trumpet, trump
- cornetfish
- Cornish, Cornish fowl
- corvine bird
- Coryphaena equisetis
- Coryphaena hippurus
- coscoroba
- costume
- costume
- costume
- cotinga, chatterer
- Cotswold
- cotton mouse, Peromyscus gossypinus
- cotton rat, Sigmodon hispidus
- cotton stainer
- cotton strain
- cottonseed
- cottonwick, Haemulon malanurum
- coucal
- cougar, puma, catamount, mountain lion, painter, panther, Felis concolor
- courlan, Aramus guarauna
- courser
- courser
- coverall
- cow pony
- cow shark, six-gilled shark, Hexanchus griseus
- cow, moo-cow
- cowbird
- cownose ray, cow-nosed ray, Rhinoptera bonasus
- cowpea, black-eyed pea
- cowrie, cowry
- coyote, prairie wolf, brush wolf, Canis latrans
- coypu, nutria, Myocastor coypus
- crab
- crab apple, crabapple
- crab louse, pubic louse, crab, Phthirius pubis
- crab-eating dog, crab-eating fox, Dusicyon cancrivorus
- crab-eating macaque, croo monkey, Macaca irus
- crab-eating opossum
- crab-eating raccoon, Procyon cancrivorus
- crabeater seal, crab-eating seal
- crake
- cranberry
- crane
- crane fly, daddy longlegs
- crank, starter
- crapaud, South American bullfrog, Leptodactylus pentadactylus
- crappie
- cravat
- crayfish, crawfish, crawdad, crawdaddy
- crayon, wax crayon
- cream-colored courser, Cursorius cursor
- creeper, tree creeper
- creole-fish, Paranthias furcifer
- crested cariama, seriema, Cariama cristata
- crested myna, Acridotheres tristis
- crested screamer
- crevalle jack, jack crevalle, Caranx hippos
- cricket
- cricket bat, bat
- cricket frog
- Cro-magnon
- croaker
- crochet needle, crochet hook
- crockery, dishware
- crocodile
- crocodile bird, Pluvianus aegyptius
- crocodilian reptile, crocodilian
- croquet mallet
- crossbar
- crossbar
- crossbill, Loxia curvirostra
- crossopterygian, lobefin, lobe-finned fish
- crow
- crow pheasant, Centropus sinensis
- crowbait, crow-bait
- crowbar, wrecking bar, pry, pry bar
- crucian carp, Carassius carassius, Carassius vulgaris
- cruiser, police cruiser, patrol car, police car, prowl car, squad car
- crupper
- Cryptoprocta, genus Cryptoprocta
- cubeb
- cuckoo
- cuckoo-bumblebee
- cuculiform bird
- cudgel
- cue, cue stick, pool cue, pool stick
- Culex quinquefasciatus, Culex fatigans
- cumin, cumin seed
- cunner, bergall, Tautogolabrus adspersus
- cupboard, closet
- cur, mongrel, mutt
- curassow
- curlew
- curlew sandpiper, Calidris Ferruginea
- curly-coated retriever
- currant
- currawong, bell magpie
- cuscus
- cusk, torsk, Brosme brosme
- cusk-eel
- custard apple
- cutlassfish, frost fish, hairtail
- cutlery, eating utensil
- cutter, cutlery, cutting tool
- cutting implement
- cuttlefish, cuttle
- cutworm
- cyclops, water flea
- cyclostome
- cyclostyle
- cymbal
- Cynopterus sphinx
- cynthia moth, Samia cynthia, Samia walkeri
- cyprinid, cyprinid fish
- cyprinodont
- D
- dabbling duck, dabbler
- dabchick, little grebe, Podiceps ruficollis
- dace, Leuciscus leuciscus
- dachshund, dachsie, badger dog
- dairy cattle, dairy cow, milch cow, milk cow, milcher, milker
- Dall sheep, Dall's sheep, white sheep, Ovis montana dalli
- dalmatian, coach dog, carriage dog
- Damaraland mole rat
- damselfish, demoiselle
- damselfly
- danaid, danaid butterfly
- Dandie Dinmont, Dandie Dinmont terrier
- daphnia, water flea
- dark horse
- darkling beetle, darkling groung beetle, tenebrionid
- dasyure
- dasyurid marsupial, dasyurid
- date
- death adder, Acanthophis antarcticus
- death's-head moth, Acherontia atropos
- deathwatch beetle, deathwatch, Xestobium rufovillosum
- decapod
- decapod crustacean, decapod
- deepwater pipefish, Cosmocampus profundus
- deepwater squirrelfish, Holocentrus bullisi
- deer mouse, Peromyscus maniculatus
- deer, cervid
- defoliator
- deinonychus
- desert iguana, Dipsosaurus dorsalis
- desert tortoise, Gopherus agassizii
- Desmodus rotundus
- devil ray, Mobula hypostoma
- Devon
- dewberry
- dhole, Cuon alpinus
- diamondback, diamondback rattlesnake, Crotalus adamanteus
- diaper, nappy, napkin
- Diapsida, subclass Diapsida
- dibble, dibber
- dicamptodon, dicamptodontid
- dictyopterous insect
- dicynodont
- die
- digger wasp
- digitigrade mammal, digitigrade
- dik-dik
- dimetrodon
- dinghy, dory, rowboat
- dingo, warrigal, warragal, Canis dingo
- dinner jacket, tux, tuxedo, black tie
- dinocerate
- dinosaur
- diplodocus
- disguise
- dishwasher, dish washer, dishwashing machine
- disposal, electric pig, garbage disposal
- diving duck
- diving petrel
- diving suit, diving dress
- divining rod, dowser, dowsing rod, waterfinder, water finder
- Doberman, Doberman pinscher
- dobson, dobsonfly, dobson fly, Corydalus cornutus
- dodo, Raphus cucullatus
- dog flea, Ctenocephalides canis
- dog-day cicada, harvest fly
- dogfish
- dollarfish, Poronotus triacanthus
- dolphin
- dolphinfish, dolphin, mahimahi
- domestic ass, donkey, Equus asinus
- domestic carp, Cyprinus carpio
- domestic cat, house cat, Felis domesticus, Felis catus
- domestic fowl, fowl, poultry
- domestic goat, Capra hircus
- domestic llama, Lama peruana
- domestic pigeon
- domestic sheep, Ovis aries
- Dominique, Dominick
- domino, half mask, eye mask
- doodlebug, ant lion, antlion
- dorbeetle
- Dorking
- dormouse
- dory
- dotterel, dotrel, Charadrius morinellus, Eudromias morinellus
- double-reed instrument, double reed
- doubletree
- douroucouli, Aotus trivirgatus
- dove
- dowitcher
- downy woodpecker
- draft horse, draught horse, dray horse
- dragonet
- dragonfly, darning needle, devil's darning needle, sewing needle, snake feeder, snake doctor, mosquito hawk, skeeter hawk
- drawbar
- drawer
- drawing chalk
- dredger
- dress suit, full dress, tailcoat, tail coat, tails, white tie, white tie and tails
- dress, frock
- dressing gown, robe-de-chambre, lounging robe
- dried apricot
- dried fruit
- driftfish
- drill
- drill, Mandrillus leucophaeus
- drone, drone pipe, bourdon
- drone, pilotless aircraft, radio-controlled aircraft
- drosophila, Drosophila melanogaster
- drum sander, electric sander, sander, smoother
- drum, drumfish
- drum, membranophone, tympan
- drumstick
- drupe, stone fruit
- drupelet
- dry point
- dry-wood termite
- dryer, drier
- dryopithecine
- dugong, Dugong dugon
- dulcimer
- dun
- dung beetle
- Dungeness crab, Cancer magister
- Durham, shorthorn
- durian
- dusky salamander
- dusky shark, Carcharhinus obscurus
- dusky-footed wood rat
- Dutch oven
- Dutch-elm beetle, Scolytus multistriatus
- dwarf pipefish, Syngnathus hildebrandi
- dwarf sperm whale, Kogia simus
- E
- eagle ray
- eagle, bird of Jove
- ear, spike, capitulum
- eared seal
- earless lizard
- earless seal, true seal, hair seal
- earwig
- eastern chimpanzee, Pan troglodytes schweinfurthii
- eastern chipmunk, hackee, striped squirrel, ground squirrel, Tamias striatus
- eastern coral snake, Micrurus fulvius
- eastern cottontail, Sylvilagus floridanus
- eastern cricket frog, Acris gryllus
- eastern dasyure, Dasyurus quoll
- eastern fence lizard, pine lizard, Sceloporus undulatus
- eastern grey squirrel, eastern gray squirrel, cat squirrel, Sciurus carolinensis
- eastern ground snake, Potamophis striatula, Haldea striatula
- eastern kingbird
- eastern lowland gorilla, Gorilla gorilla grauri
- eastern meadowlark, Sturnella magna
- eastern narrow-mouthed toad, Gastrophryne carolinensis
- eastern pipistrel, Pipistrellus subflavus
- eastern red-backed salamander, Plethodon cinereus
- eastern woodrat, Neotoma floridana
- eating apple, dessert apple
- echidna, spiny anteater, anteater
- echidna, spiny anteater, anteater
- echinococcus
- ectoparasite, ectozoan, ectozoon, epizoan, epizoon
- edentate
- edge tool
- edger
- edible nut
- edible seed
- edible snail, Helix pomatia
- eel
- eelblenny
- eelpout, pout
- eelworm
- eft
- eggar, egger
- egret
- Egyptian cat
- Egyptian vulture, Pharaoh's chicken, Neophron percnopterus
- eider, eider duck
- eland
- elapid, elapid snake
- elaterid beetle, elater, elaterid
- elbow pad
- elderberry
- electric catfish, Malopterurus electricus
- electric eel, Electrophorus electric
- electric mixer
- electric organ, electronic organ, Hammond organ, organ
- electric range
- electric ray, crampfish, numbfish, torpedo
- electrical device
- electronic equipment
- electronic instrument, electronic musical instrument
- elephant
- elephant bird, aepyornis
- elephant seal, sea elephant
- elk, European elk, moose, Alces alces
- elver
- emperor butterfly, emperor
- emperor penguin, Aptenodytes forsteri
- emperor, emperor moth, Saturnia pavonia
- emu, Dromaius novaehollandiae, Emu novaehollandiae
- English foxhound
- English lady crab, Portunus puber
- English setter
- English sole, lemon sole, Parophrys vitulus
- English sparrow, house sparrow, Passer domesticus
- English springer, English springer spaniel
- English toy spaniel
- EntleBucher
- eohippus, dawn horse
- eolith
- ephemerid, ephemeropteran
- eptatretus
- eraser
- ermine, shorttail weasel, Mustela erminea
- ern, erne, grey sea eagle, gray sea eagle, European sea eagle, white-tailed sea eagle, Haliatus albicilla
- escolar, Lepidocybium flavobrunneum
- Eskimo curlew, Numenius borealis
- Eskimo dog, husky
- etagere
- Eurasian badger, Meles meles
- Eurasian green toad, Bufo viridis
- Eurasian hamster, Cricetus cricetus
- Eurasian kingfisher, Alcedo atthis
- Eurasian otter, Lutra lutra
- Eurasian woodcock, Scolopax rusticola
- European bittern, Botaurus stellaris
- European black grouse, heathfowl, Lyrurus tetrix
- European bream, Abramis brama
- European catfish, sheatfish, Silurus glanis
- European creeper, Certhia familiaris
- European cuckoo, Cuculus canorus
- European curlew, Numenius arquata
- European fire salamander, Salamandra salamandra
- European flatfish, Platichthys flesus
- European gallinule, Porphyrio porphyrio
- European goatsucker, European nightjar, Caprimulgus europaeus
- European hare, Lepus europaeus
- European house cricket, Acheta domestica
- European lemming, Lemmus lemmus
- European lobster, Homarus vulgaris
- European magpie, Pica pica
- European nuthatch, Sitta europaea
- European perch, Perca fluviatilis
- European rabbit, Old World rabbit, Oryctolagus cuniculus
- European roller, Coracias garrulus
- European sandpiper, Actitis hypoleucos
- European sea bream, Pagellus centrodontus
- European shrike, Lanius excubitor
- European sole, Solea solea
- European spider crab, king crab, Maja squinado
- European swift, Apus apus
- European toad, Bufo bufo
- European tortoise, Testudo graeca
- European water ouzel, Cinclus aquaticus
- European water shrew, Neomys fodiens
- European wildcat, catamountain, Felis silvestris
- evening grosbeak, Hesperiphona vespertina
- ewe
- Exmoor
- Exmoor
- eyas
- F
- face guard
- face mask
- fairy bluebird, bluebird
- fairy shrimp
- fairy swallow
- falcon
- fall armyworm, Spodoptera frugiperda
- fall cankerworm
- fall webworm, Hyphantria cunea
- fallow deer, Dama dama
- false face
- false gavial, Tomistoma schlegeli
- false scorpion, pseudoscorpion
- false vampire, false vampire bat
- fanaloka, Fossa fossa
- farm horse, dobbin
- Fasciolopsis buski
- fawn
- feather boa, boa
- feijoa, pineapple guava
- feist, fice
- fence lizard
- fencing mask, fencer's mask
- fer-de-lance, Bothrops atrops
- ferret badger
- ferry, ferryboat
- fichu
- fiddler crab
- field cricket, Acheta assimilis
- field mouse, fieldmouse
- field pea
- field spaniel
- field sparrow, Spizella pusilla
- fieldfare, snowbird, Turdus pilaris
- fig
- fig-bird
- filaria
- file
- filefish
- filter
- finback, finback whale, fin whale, common rorqual, Balaenoptera physalus
- fingerling
- fipple flute, fipple pipe, recorder, vertical flute
- fire ant
- fire engine, fire truck
- fire iron
- fire-bellied toad, Bombina bombina
- fireboat
- firebug
- firefly, fire beetle, Pyrophorus noctiluca
- firefly, lightning bug
- fish fly, fish-fly
- fisher, pekan, fisher cat, black cat, Martes pennanti
- fishing boat, fishing smack, fishing vessel
- fishing eagle, Haliaeetus leucorhyphus
- fishing rod, fishing pole
- flageolet, treble recorder, shepherd's pipe
- flagfish, American flagfish, Jordanella floridae
- flail
- flame fish, flamefish, Apogon maculatus
- flamingo
- flashlight fish, Photoblepharon palpebratus
- flat-coated retriever
- flatfish
- flathead
- flathead
- flathead catfish, mudcat, goujon, shovelnose catfish, spoonbill catfish, Pylodictus olivaris
- flatworm, platyhelminth
- flea
- flea beetle
- fledgling, fledgeling
- flesh fly, Sarcophaga carnaria
- flicker
- flickertail, Richardson ground squirrel, Citellus richardsoni
- float, plasterer's float
- Florida gallinule, Gallinula chloropus cachinnans
- Florida pompano, Trachinotus carolinus
- Florida smoothhound, Mustelus norrisi
- flounder
- flugelhorn, fluegelhorn
- fluid
- fluke, trematode, trematode worm
- flute, transverse flute
- fly
- fly rod
- flycatching warbler
- flying fish
- flying fox
- flying gecko, fringed gecko, Ptychozoon homalocephalum
- flying gurnard, flying robin, butterflyfish
- flying lemur, flying cat, colugo
- flying phalanger, flying opossum, flying squirrel
- food processor
- footwear
- footwear, footgear
- forest goat, spindle horn, Pseudoryx nghetinhensis
- fork
- fork
- forklift
- formalwear, eveningwear, evening dress, evening clothes
- fossa, fossa cat, Cryptoprocta ferox
- fossorial mammal
- foul-weather gear
- foundation garment, foundation
- four-lined plant bug, four-lined leaf bug, Poecilocapsus lineatus
- fox
- fox squirrel, eastern fox squirrel, Sciurus niger
- fox terrier
- foxhound
- free-reed
- free-reed instrument
- freetail, free-tailed bat, freetailed bat
- freight car
- French horn, horn
- freshwater bream, bream
- freshwater mussel, freshwater clam
- fret
- Friesian, Holstein, Holstein-Friesian
- frigate bird, man-of-war bird
- frilled lizard, Chlamydosaurus kingi
- fringe-toed lizard, Uma notata
- fritillary
- frogfish
- froghopper
- frogmouth
- frosted bat, Vespertilio murinus
- fruit bat, megabat
- fruit fly, pomace fly
- fulmar, fulmar petrel, Fulmarus glacialis
- fungus gnat
- fungus gnat, sciara, sciarid
- funnel
- fur
- fur seal
- fur seal
- fur-piece
- furnishing, trappings
- furniture, piece of furniture, article of furniture
- G
- gaboon viper, Bitis gabonica
- gadfly
- gadoid, gadoid fish
- galago, bushbaby, bush baby
- gall midge, gallfly, gall gnat
- gall wasp, gallfly, cynipid wasp, cynipid gall wasp
- galley
- gallfly
- gallinule, marsh hen, water hen, swamphen
- Galloway
- game equipment
- game fish, sport fish
- game fowl
- gander
- gangsaw
- gannet
- ganoid, ganoid fish
- gar, garfish, garpike, billfish, Lepisosteus osseus
- garden snail
- garden spider, Aranea diademata
- garden tool, lawn tool
- garden webworm, Loxostege similalis
- garganey, Anas querquedula
- garter belt, suspender belt
- garter snake, grass snake
- gas oven
- gas range, gas stove, gas cooker
- gasmask, respirator, gas helmet
- gastropod, univalve
- gaur, Bibos gaurus
- gavial, Gavialis gangeticus
- gaviiform seabird
- gayal, mithan, Bibos frontalis
- Gazella subgutturosa
- gazelle
- gecko
- gee-gee
- gelechiid, gelechiid moth
- gempylid
- genet, Genetta genetta
- genip, Spanish lime
- genipap, genipap fruit
- geoduck
- geological formation, formation
- geometrid, geometrid moth
- gerbil, gerbille
- gerenuk, Litocranius walleri
- German cockroach, Croton bug, crotonbug, water bug, Blattella germanica
- German shepherd, German shepherd dog, German police dog, alsatian
- German short-haired pointer
- giant armadillo, tatou, tatu, Priodontes giganteus
- giant clam, Tridacna gigas
- giant cockroach
- giant crab, Macrocheira kaempferi
- giant eland, Taurotragus derbianus
- giant hornet, Vespa crabro
- giant kangaroo, great grey kangaroo, Macropus giganteus
- giant panda, panda, panda bear, coon bear, Ailuropoda melanoleuca
- giant petrel, giant fulmar, Macronectes giganteus
- giant salamander, Megalobatrachus maximus
- giant schnauzer
- giant silkworm moth, silkworm moth
- giant tortoise
- giant water bug
- gibbon, Hylobates lar
- gig
- Gila monster, Heloderma suspectum
- gilded flicker, Colaptes chrysoides
- giraffe, camelopard, Giraffa camelopardalis
- glass cutter
- glass lizard, glass snake, joint snake
- glider, sailplane
- glockenspiel, orchestral bells
- glossy snake, Arizona elegans
- glove
- glutton, Gulo gulo, wolverine
- gnat
- gnat
- gnatcatcher
- gnu, wildebeest
- go-kart
- goat antelope
- goat, caprine animal
- goatfish, red mullet, surmullet, Mullus surmuletus
- goatsucker, nightjar, caprimulgid
- goby, gudgeon
- godwit
- gold-crowned kinglet, Regulus satrata
- gold-tail moth, Euproctis chrysorrhoea
- goldcrest, golden-crested kinglet, Regulus regulus
- golden eagle, Aquila chrysaetos
- golden hamster, Syrian hamster, Mesocricetus auratus
- golden mole
- golden oriole, Oriolus oriolus
- golden pheasant, Chrysolophus pictus
- golden plover
- golden retriever
- goldeneye, whistler, Bucephela clangula
- goldfinch, Carduelis carduelis
- goldfish, Carassius auratus
- golf club, golf-club, club
- golfcart, golf cart
- goliath frog, Rana goliath
- gondola
- gong, tam-tam
- goosander, Mergus merganser
- goose
- goose barnacle, gooseneck barnacle, Lepas fascicularis
- gooseberry
- goosefish, angler, anglerfish, angler fish, monkfish, lotte, allmouth, Lophius Americanus
- gopher snake, Pituophis melanoleucus
- gopher tortoise, gopher turtle, gopher, Gopherus polypemus
- gopher, pocket gopher, pouched rat
- goral, Naemorhedus goral
- Gordon setter
- gorilla, Gorilla gorilla
- goshawk, Accipiter gentilis
- gouge
- gourd
- gown, robe
- gown, surgical gown, scrubs
- grab bar
- grackle, crow blackbird
- grain moth
- grain, caryopsis
- grampus, Grampus griseus
- grape
- grapefruit
- grapnel, grapple, grappler, grappling hook, grappling iron
- grass frog, Rana temporaria
- grass snake, ring snake, ringed snake, Natrix natrix
- grassfinch, grass finch
- grasshopper mouse
- grasshopper, hopper
- grater
- graver, graving tool, pointel, pointrel
- great ape, pongid
- great blue heron, Ardea herodius
- great bowerbird, Chlamydera nuchalis
- great bustard, Otis tarda
- great crested grebe, Podiceps cristatus
- Great Dane
- great grey owl, great gray owl, Strix nebulosa
- Great Pyrenees
- great snipe, woodcock snipe, Gallinago media
- great white heron, Ardea occidentalis
- great white heron, Casmerodius albus
- great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias
- greater kudu, Tragelaphus strepsiceros
- greater prairie chicken, Tympanuchus cupido
- greater scaup, Aythya marila
- Greater Swiss Mountain dog
- greater whitethroat, whitethroat, Sylvia communis
- greater yellowlegs, Tringa melanoleuca
- grebe
- Greek partridge, rock partridge, Alectoris graeca
- green frog, spring frog, Rana clamitans
- green lacewing, chrysopid, stink fly
- green lizard, Lacerta viridis
- green monkey, African green monkey, Cercopithecus aethiops sabaeus
- green olive
- green peach aphid
- green peafowl, Pavo muticus
- green snake
- green snake, grass snake
- green turtle, Chelonia mydas
- green woodpecker, Picus viridis
- green-tailed towhee, Chlorura chlorura
- greenbottle, greenbottle fly
- greenfly
- greenhouse whitefly, Trialeurodes vaporariorum
- greenling
- greenshank, Tringa nebularia
- greenwing, green-winged teal, Anas crecca
- grenadier, rattail, rattail fish
- grevy's zebra, Equus grevyi
- grey fox, gray fox, Urocyon cinereoargenteus
- grey kingbird, gray kingbird, petchary, Tyrannus domenicensis domenicensis
- grey lemming, gray lemming, red-backed lemming
- grey skate, gray skate, Raja batis
- grey snapper, gray snapper, mangrove snapper, Lutjanus griseus
- grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus
- grey, gray
- greyback, grayback, Limnodromus griseus
- greyhen, grayhen, grey hen, gray hen, heath hen
- greylag, graylag, greylag goose, graylag goose, Anser anser
- grid, gridiron
- griddle
- griffon vulture, griffon, Gyps fulvus
- griffon, Brussels griffon, Belgian griffon
- griffon, wire-haired pointing griffon
- grison, Grison vittatus, Galictis vittatus
- grivet, Cercopithecus aethiops
- grizzly, grizzly bear, silvertip, silver-tip, Ursus horribilis, Ursus arctos horribilis
- groenendael
- grosbeak, grossbeak
- ground beetle, carabid beetle
- ground rattler, massasauga, Sistrurus miliaris
- ground roller
- ground snake, Sonora semiannulata
- ground squirrel, gopher, spermophile
- groundhog, woodchuck, Marmota monax
- group, grouping
- grouper
- grouse
- grub
- grugru nut
- grunt
- guan
- guanaco, Lama guanicoe
- guano bat, Mexican freetail bat, Tadarida brasiliensis
- guard boat
- guava
- gudgeon, Gobio gobio
- guenon, guenon monkey
- Guernsey
- guide dog
- guillemot
- guinea fowl, guinea, Numida meleagris
- guinea pig, Cavia cobaya
- Guinea worm, Dracunculus medinensis
- guitar
- guitarfish
- gull, seagull, sea gull
- gun carriage
- gun trigger, trigger
- gunboat
- gunnel, bracketed blenny
- guppy, rainbow fish, Lebistes reticulatus
- gurnard
- gypsy moth, gipsy moth, Lymantria dispar
- gyrfalcon, gerfalcon, Falco rusticolus
- H
- habit
- habit, riding habit
- hack
- hack
- hack, jade, nag, plug
- hackney
- haddock, Melanogrammus aeglefinus
- hadrosaur, hadrosaurus, duck-billed dinosaur
- hagberry
- hagfish, hag, slime eels
- hairpiece, false hair, postiche
- hairstreak, hairstreak butterfly
- hairy-legged vampire bat, Diphylla ecaudata
- hake
- half track
- halfbeak
- halibut, holibut
- hallstand
- hamadryad, king cobra, Ophiophagus hannah, Naja hannah
- hammer
- hammer, power hammer
- hammerhead, hammerhead shark
- Hampshire, Hampshire down
- hamster
- hand blower, blow dryer, blow drier, hair dryer, hair drier
- hand mower
- hand throttle
- hand-me-down
- handbell
- handcar
- handcart, pushcart, cart, go-cart
- handlebar
- handspike
- handwear, hand wear
- hanging fly
- harbor porpoise, herring hog, Phocoena phocoena
- harbor seal, common seal, Phoca vitulina
- hard tick, ixodid
- hard-shell crab
- hare
- hare wallaby, kangaroo hare
- harmonica, mouth organ, harp, mouth harp
- harmonium, organ, reed organ
- harness horse
- harnessed antelope
- harp
- harp seal, Pagophilus groenlandicus
- harpsichord, cembalo
- harpy, harpy bat, tube-nosed bat, tube-nosed fruit bat
- harpy, harpy eagle, Harpia harpyja
- harrier
- harrier
- harrier eagle, short-toed eagle
- hart, stag
- hartebeest
- harvest mouse, Micromyx minutus
- harvestfish, Paprilus alepidotus
- harvestman, daddy longlegs, Phalangium opilio
- hat, chapeau, lid
- hawfinch, Coccothraustes coccothraustes
- hawk owl, Surnia ulula
- hawkmoth, hawk moth, sphingid, sphinx moth, hummingbird moth
- hawksbill turtle, hawksbill, hawkbill, tortoiseshell turtle, Eretmochelys imbricata
- hazel mouse, Muscardinus avellanarius
- hazelnut, filbert, cobnut, cob
- head covering, veil
- head louse, Pediculus capitis
- headdress, headgear
- headscarf
- hearing dog
- heath hen, Tympanuchus cupido cupido
- heaver
- heavier-than-air craft
- hedge trimmer
- hedgehog, Erinaceus europaeus, Erinaceus europeaeus
- heifer
- helicopter, chopper, whirlybird, eggbeater
- heliothis moth, Heliothis zia
- Helix hortensis
- hellbender, mud puppy, Cryptobranchus alleganiensis
- hellgrammiate, dobson
- helmet
- hemipterous insect, bug, hemipteran, hemipteron
- hen
- hen, biddy
- hepatic tanager, Piranga flava hepatica
- Hereford, whiteface
- hermit crab
- hermit thrush, Hylocichla guttata
- heron
- herring gull, Larus argentatus
- herring, Clupea harangus
- heteropterous insect
- heterostracan
- hickory nut
- high-hat cymbal, high hat
- hill myna, Indian grackle, grackle, Gracula religiosa
- hind
- hind
- hinny
- hip pad
- hip, rose hip, rosehip
- Hippodamia convergens
- hippopotamus, hippo, river horse, Hippopotamus amphibius
- hispid pocket mouse, Perognathus hispidus
- hoary marmot, whistler, whistling marmot, Marmota caligata
- hoatzin, hoactzin, stinkbird, Opisthocomus hoazin
- hob
- hobby, Falco subbuteo
- hockey stick
- hoe
- hog badger, hog-nosed badger, sand badger, Arctonyx collaris
- hog plum, wild plum
- hog plum, yellow mombin
- hog sucker, hog molly, Hypentelium nigricans
- hog, hogget, hogg
- hog, pig, grunter, squealer, Sus scrofa
- hog-nosed skunk, hognosed skunk, badger skunk, rooter skunk, Conepatus leuconotus
- hogchoker, Trinectes maculatus
- hogfish, hog snapper, Lachnolaimus maximus
- hognose bat, Choeronycteris mexicana
- hognose snake, puff adder, sand viper
- Holocentrus ascensionis
- holocephalan, holocephalian
- homing pigeon, homer
- hominid
- hominoid
- Homo erectus
- Homo habilis
- Homo sapiens
- Homo sapiens sapiens, modern man
- Homo soloensis
- homo, man, human being, human
- honey buzzard, Pernis apivorus
- honey eater, honeysucker
- honey guide
- honeybee, Apis mellifera
- honeycreeper
- honeycreeper, Hawaiian honeycreeper
- honeydew, honeydew melon
- honker, Canada goose, Canadian goose, Branta canadensis
- hood
- hooded merganser, hooded sheldrake, Lophodytes cucullatus
- hooded seal, bladdernose, Cystophora cristata
- hooded skunk, Mephitis macroura
- hook
- hookworm
- hoop snake
- hoopoe, hoopoo
- hoot owl
- horn fly, Haematobia irritans
- hornbill
- horned chameleon, Chamaeleo oweni
- horned lizard, horned toad, horny frog
- horned owl
- horned pout, hornpout, pout, Ameiurus Melas
- horned puffin, Fratercula corniculata
- horned screamer, Anhima cornuta
- horned viper, cerastes, sand viper, horned asp, Cerastes cornutus
- hornet
- hornpipe, pibgorn, stockhorn
- horse mackerel, jack mackerel, Spanish mackerel, saurel, Trachurus symmetricus
- horse mackerel, saurel, Trachurus trachurus
- horse tick, horsefly, Hippobosca equina
- horse-drawn vehicle
- horsefly, cleg, clegg, horse fly
- horseleech
- horseshoe bat
- horseshoe bat
- horseshoe crab, king crab, Limulus polyphemus, Xiphosurus polyphemus
- horseshoe whipsnake, Coluber hippocrepis
- hose
- hosiery, hose
- hospital ship
- hot plate, hotplate
- hound, hound dog
- house finch, linnet, Carpodacus mexicanus
- house martin, Delichon urbica
- house mouse, Mus musculus
- house wren, Troglodytes aedon
- houseboat
- housedog
- housefly, house fly, Musca domestica
- housing, lodging, living accommodations
- hovercraft, ground-effect machine
- howler monkey, howler
- huckleberry
- hulk
- human botfly, Dermatobia hominis
- hummingbird
- humpback, humpback whale, Megaptera novaeangliae
- Hungarian partridge, grey partridge, gray partridge, Perdix perdix
- hyena, hyaena
- Hyphantria cunea
- hypodermic needle
- hyrax, coney, cony, dassie, das
- I
- ibex, Capra ibex
- ibis
- Ibizan hound, Ibizan Podenco
- ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus
- ice maker
- iceboat, ice yacht, scooter
- icebreaker, iceboat
- icepick, ice pick
- ichneumon fly
- ichneumon, Herpestes ichneumon
- ichthyosaur
- ichthyosaurus
- Ichyostega
- iguanid, iguanid lizard
- imago
- impala, Aepyceros melampus
- imperial mammoth, imperial elephant, Archidiskidon imperator
- imperial moth, Eacles imperialis
- Indian buffalo
- Indian club
- Indian cobra, Naja naja
- Indian elephant, Elephas maximus
- Indian mongoose, Herpestes nyula
- Indian python, Python molurus
- Indian rat snake, Ptyas mucosus
- Indian rhinoceros, Rhinoceros unicornis
- indigo bunting, indigo finch, indigo bird, Passerina cyanea
- indigo snake, gopher snake, Drymarchon corais
- indri, indris, Indri indri, Indri brevicaudatus
- insectivore
- instar
- instrument
- io moth, Automeris io
- Irish setter, red setter
- Irish terrier
- Irish water spaniel
- Irish wolfhound
- iron, branding iron
- iron, smoothing iron
- ironing
- isopod
- Italian bee
- itch mite, sarcoptid
- ivory gull, Pagophila eburnea
- ivorybill, ivory-billed woodpecker, Campephilus principalis
- Ixodes dammini, deer tick
- Ixodes dentatus
- Ixodes neotomae
- Ixodes pacificus, western black-legged tick
- Ixodes persulcatus
- Ixodes scapularis, black-legged tick
- Ixodes spinipalpis
- izar
- J
- jabiru, Jabiru mycteria
- jaboticaba
- jacamar
- jack
- jack
- jack, jackass
- jackal, Canis aureus
- jackass bat, spotted bat, Euderma maculata
- jackass penguin, Spheniscus demersus
- jackdaw, daw, Corvus monedula
- jackfruit, jak, jack
- jackknife-fish, Equetus lanceolatus
- jackrabbit
- jacksnipe, half snipe, Limnocryptes minima
- Jaculus jaculus
- jaeger
- jaguar, panther, Panthera onca, Felis onca
- jaguarundi, jaguarundi cat, jaguarondi, eyra, Felis yagouaroundi
- Japanese beetle, Popillia japonica
- Japanese deer, sika, Cervus nipon, Cervus sika
- Japanese oyster, Ostrea gigas
- Japanese spaniel
- Java man, Trinil man
- Java sparrow, Java finch, ricebird, Padda oryzivora
- Javanthropus, genus Javanthropus
- jawfish
- jawless vertebrate, jawless fish, agnathan
- Jaws of Life
- jay
- jennet, jenny, jenny ass
- jerboa
- jerboa kangaroo, kangaroo jerboa
- jerboa rat
- Jersey
- jew's harp, jews' harp, mouth bow
- jewelled headdress, jeweled headdress
- jewfish, Mycteroperca bonaci
- jigsaw, scroll saw, fretsaw
- jird
- Job's tears
- Jonah crab, Cancer borealis
- jujube, Chinese date, Chinese jujube
- jump suit
- jump suit, jumpsuit
- jumper
- jumping bean, jumping seed, Mexican jumping bean
- jumping bristletail, machilid
- jumping mouse
- jumping plant louse, psylla, psyllid
- junco, snowbird
- junction, conjunction
- June beetle, June bug, May bug, May beetle
- jungle cat, Felis chaus
- jungle cock
- jungle fowl, gallina
- jungle hen
- juniper berry
- junk
- K
- kaffir cat, caffer cat, Felis ocreata
- kaffiyeh
- kai apple
- kaki, Himantopus novae-zelandiae
- Kamchatkan sea eagle, Stellar's sea eagle, Haliaeetus pelagicus
- kanchil, Tragulus kanchil
- kangaroo
- kangaroo mouse, dwarf pocket rat
- kangaroo rat, desert rat, Dipodomys phillipsii
- kanzu
- katydid
- kazoo
- kea, Nestor notabilis
- keelboat
- keeshond
- kelp greenling, Hexagrammos decagrammus
- kelpie
- Kentucky black bass, spotted black bass, Micropterus pseudoplites
- kerchief
- kernel
- Kerry blue terrier
- kestrel, Falco tinnunculus
- ketembilla, kitembilla, kitambilla
- key
- keyboard instrument
- keyhole limpet, Fissurella apertura, Diodora apertura
- kiang, Equus kiang
- kickstand
- kid
- killdeer, kildeer, killdeer plover, Charadrius vociferus
- killer whale, killer, orca, grampus, sea wolf, Orcinus orca
- killifish
- kimono
- King Charles spaniel
- king crab, Alaska crab, Alaskan king crab, Alaska king crab, Paralithodes camtschatica
- king mackerel, cavalla, cero, Scomberomorus cavalla
- king penguin, Aptenodytes patagonica
- king snake, kingsnake
- king vulture, Sarcorhamphus papa
- king whiting, Menticirrhus americanus
- kingbird, Tyrannus tyrannus
- kingfish
- kingfish, Seriola grandis
- kingfisher
- kinglet
- kinkajou, honey bear, potto, Potos flavus, Potos caudivolvulus
- kit fox, prairie fox, Vulpes velox
- kit fox, Vulpes macrotis
- kitchen appliance
- kitchen utensil
- kitchenware
- kite
- kitten, kitty
- kittiwake
- kitty, kitty-cat, puss, pussy, pussycat
- kiwi, apteryx
- kiwi, kiwi fruit, Chinese gooseberry
- knee pad
- knife
- knitting needle
- knot, greyback, grayback, Calidris canutus
- koala, koala bear, kangaroo bear, native bear, Phascolarctos cinereus
- kob, Kobus kob
- kola nut, cola nut
- Komodo dragon, Komodo lizard, dragon lizard, giant lizard, Varanus komodoensis
- komondor
- kookaburra, laughing jackass, Dacelo gigas
- koto
- krait
- krill
- krummhorn, crumhorn, cromorne
- kudu, koodoo, koudou
- kumquat
- kuvasz
- L
- Labrador retriever
- lace bug
- lacertid lizard, lacertid
- lacewing, lacewing fly
- ladybug, ladybeetle, lady beetle, ladybird, ladybird beetle
- lagerphone
- lagomorph, gnawing mammal
- lake trout, salmon trout, Salvelinus namaycush
- lake whitefish, Coregonus clupeaformis
- Lakeland terrier
- lamb
- lambkin
- lamellicorn beetle
- lamprey, lamprey eel, lamper eel
- lancetfish, lancet fish, wolffish
- land, dry land, earth, ground, solid ground, terra firma
- landing craft
- langur
- lantern fly, lantern-fly
- lanternfish
- Lanthanotus borneensis
- lapdog
- lapin
- lappet caterpillar
- lappet, lappet moth
- lapwing, green plover, peewit, pewit
- large civet, Viverra zibetha
- large poodle
- large white, Pieris brassicae
- largemouth, largemouth bass, largemouthed bass, largemouth black bass, largemouthed black bass, Micropterus salmoides
- larid
- lark
- lash, thong
- lasiocampid, lasiocampid moth
- latchet
- laughing gull, blackcap, pewit, pewit gull, Larus ridibundus
- laughing owl, laughing jackass, Sceloglaux albifacies
- launch
- lawn furniture
- lawn mower, mower
- lead pencil
- leaf beetle, chrysomelid
- leaf bug, plant bug
- leaf miner, leaf-miner
- leaf roller, leaf-roller
- leaf-cutting bee, leaf-cutter, leaf-cutter bee
- leaf-footed bug, leaf-foot bug
- leaf-nosed snake
- leafhopper
- leafnose bat, leaf-nosed bat
- least bittern, Ixobrychus exilis
- least sandpiper, stint, Erolia minutilla
- least shrew, Cryptotis parva
- leather carp
- leather strip
- leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea
- leatherjacket
- leatherjacket, leatherjack
- lechwe, Kobus leche
- leech, bloodsucker, hirudinean
- lefteye flounder, lefteyed flounder
- legging, leging, leg covering
- legless lizard
- legume
- lemming
- lemon
- lemon shark, Negaprion brevirostris
- lemon sole, Microstomus kitt
- lemur
- lentil
- Leonberg
- leopard cat, Felis bengalensis
- leopard frog, spring frog, Rana pipiens
- leopard lizard
- leopard, Panthera pardus
- leotard, unitard, body suit, cat suit
- leporid, leporid mammal
- leptocephalus
- leptodactylid frog, leptodactylid
- lerot
- lesser ape
- lesser kudu, Tragelaphus imberbis
- lesser panda, red panda, panda, bear cat, cat bear, Ailurus fulgens
- lesser prairie chicken, Tympanuchus pallidicinctus
- lesser rorqual, piked whale, minke whale, Balaenoptera acutorostrata
- lesser scaup, lesser scaup duck, lake duck, Aythya affinis
- lesser whitethroat, whitethroat, Sylvia curruca
- lesser yellowlegs, Tringa flavipes
- lever
- leveret
- Lhasa, Lhasa apso
- lifeboat
- lifting device
- liger
- lighter-than-air craft
- lightship
- lime
- limestone salamander, Hydromantes brunus
- limpet
- limpkin, Aramus pictus
- Lincoln
- lined snake, Tropidoclonion lineatum
- ling
- lingcod, Ophiodon elongatus
- lingonberry, mountain cranberry, cowberry, lowbush cranberry
- linnet, lintwhite, Carduelis cannabina
- linseed, flaxseed
- linstock
- lion, king of beasts, Panthera leo
- lionfish
- Liopelma hamiltoni
- Lippizan, Lipizzan, Lippizaner
- litchi, litchi nut, litchee, lichi, leechee, lichee, lychee
- little auk, dovekie, Plautus alle
- little black ant, Monomorium minimum
- little blue heron, Egretta caerulea
- little brown bat, little brown myotis, Myotis leucifugus
- little chief hare, Ochotona princeps
- little egret, Egretta garzetta
- little owl, Athene noctua
- little skate, Raja erinacea
- littleneck, littleneck clam
- liver chestnut
- liver fluke, Fasciola hepatica
- liza, Mugil liza
- lizardfish, snakefish, snake-fish
- llama
- loach
- lobster
- locomotive, engine, locomotive engine, railway locomotive
- locust
- loganberry
- loggerhead shrike, Lanius lucovicianus
- loggerhead, loggerhead turtle, Caretta caretta
- loir, Glis glis
- loligo
- loment
- long-billed marsh wren, Cistothorus palustris
- long-eared bat
- long-eared owl, Asio otus
- long-horned beetle, longicorn, longicorn beetle
- long-horned grasshopper, tettigoniid
- long-tailed porcupine, Trichys lipura
- longanberry, dragon's eye
- longfin mako, Isurus paucus
- longhorn, Texas longhorn
- longtail weasel, long-tailed weasel, Mustela frenata
- longwool
- lorikeet
- lory
- louse fly, hippoboscid
- louse, sucking louse
- louvar, Luvarus imperialis
- lovebird
- lowland burrowing treefrog, northern casque-headed frog, Pternohyla fodiens
- lugworm, lug, lobworm
- lumpfish, Cyclopterus lumpus
- luna moth, Actias luna
- lungfish
- lungless salamander, plethodont
- lute
- lycaenid, lycaenid butterfly
- lygaeid, lygaeid bug
- lygus bug
- lymantriid, tussock moth
- lynx, catamount
- lyre snake
- lyrebird
- M
- macadamia nut
- macaque
- macaw
- machine
- mackerel
- mackerel scad, mackerel shad, Decapterus macarellus
- mackerel shark
- macrotus, Macrotus californicus
- Madagascar cat, ring-tailed lemur, Lemur catta
- maggot
- magpie
- maigre, maiger, Sciaena aquila
- maillot, tank suit
- mako, mako shark
- malacostracan crustacean
- malamute, malemute, Alaskan malamute
- malarial mosquito, malaria mosquito
- Malayan tapir, Indian tapir, Tapirus indicus
- maleo, Macrocephalon maleo
- malinois
- mallard, Anas platyrhynchos
- mallee fowl, leipoa, lowan, Leipoa ocellata
- mallet
- Maltese dog, Maltese terrier, Maltese
- Maltese, Maltese cat
- mamba
- mamey, mammee, mammee apple
- mammoth
- manakin
- manatee, Trichechus manatus
- mandarin duck, Aix galericulata
- mandarin, mandarin orange
- mandolin
- mandrill, Mandrillus sphinx
- Manduca quinquemaculata
- Manduca sexta
- mangabey
- mango
- mangosteen
- maniraptor
- manta, manta ray, devilfish
- mantilla
- mantis, mantid
- mantispid
- mantled ground squirrel, Citellus lateralis
- manul, Pallas's cat, Felis manul
- Manx, Manx cat
- mara, Dolichotis patagonum
- marabou, marabout, marabou stork, Leptoptilus crumeniferus
- maraca
- marang
- Marco Polo sheep, Marco Polo's sheep, Ovis poli
- margate, Haemulon album
- margay, margay cat, Felis wiedi
- marimba, xylophone
- marine iguana, Amblyrhynchus cristatus
- marine mussel, mytilid
- markhor, markhoor, Capra falconeri
- marlin
- marlinespike, marlinspike, marlingspike
- marmoset
- marmot
- marsh hare, swamp rabbit, Sylvilagus palustris
- marsh harrier, Circus Aeruginosus
- marsh hawk, northern harrier, hen harrier, Circus cyaneus
- marsh wren
- marten, marten cat
- martin
- masher
- mask
- mask
- masked shrew, Sorex cinereus
- mason bee
- mason wasp
- mason wasp
- massasauga, massasauga rattler, Sistrurus catenatus
- mast
- mast
- mastiff
- mastiff bat
- mastodon, mastodont
- Mastotermes darwiniensis
- Mastotermes electrodominicus
- matchstick
- material, stuff
- matter
- maulstick, mahlstick
- May apple
- mayfly, dayfly, shadfly
- meadow spittlebug, Philaenus spumarius
- meadow vole, meadow mouse, Microtus pennsylvaticus
- meadowlark, lark
- mealworm
- mealybug, mealy bug
- measuring worm, inchworm, looper
- mechanism
- mecopteran
- medicinal leech, Hirudo medicinalis
- Mediterranean flour moth, Anagasta kuehniella
- Mediterranean fruit fly, medfly, Ceratitis capitata
- Mediterranean water shrew, Neomys anomalus
- medlar
- meerkat, mierkat
- megapode, mound bird, mound-bird, mound builder, scrub fowl
- megatherian, megatheriid, megatherian mammal
- melolonthid beetle
- melon
- melon ball
- memory device, storage device
- menhaden, Brevoortia tyrannis
- merganser, fish duck, sawbill, sheldrake
- merino, merino sheep
- Merostomata, class Merostomata
- mew, mew gull, sea mew, Larus canus
- Mexican bean beetle, bean beetle, Epilachna varivestis
- Mexican hairless
- Mexican pocket mouse, Liomys irroratus
- microorganism, micro-organism
- microwave, microwave oven
- midge
- midwife toad, Alytes cisternasi
- migrant shrike, Lanius ludovicianus migrans
- migratory grasshopper
- migratory locust, Locusta migratoria
- military uniform
- milk snake, house snake, milk adder, checkered adder, Lampropeltis triangulum
- milking shorthorn
- miller's-thumb
- mincer, mincing machine
- miniature pinscher
- miniature poodle
- miniature schnauzer
- mink
- minnow, Phoxinus phoxinus
- mirid bug, mirid, capsid
- mirror carp
- missel thrush, mistle thrush, mistletoe thrush, Turdus viscivorus
- mite
- miter box, mitre box
- mixer
- mockingbird, mocker, Mimus polyglotktos
- mojarra
- Mojave rattlesnake, Crotalus scutulatus
- moke
- mole
- mole cricket
- mole rat
- mole rat
- mole salamander, Ambystoma talpoideum
- mollie, molly
- Molly Miller, Scartella cristata
- moloch
- mombin
- monal, monaul
- money cowrie, Cypraea moneta
- mongoose
- monitor, monitor lizard, varan
- monoplane flying fish, two-wing flying fish
- monotreme, egg-laying mammal
- Montagu's harrier, Circus pygargus
- moon shell, moonshell
- moonfish, Atlantic moonfish, horsefish, horsehead, horse-head, dollarfish, Selene setapinnis
- moorhen
- moorhen, Gallinula chloropus
- moray, moray eel
- Morgan
- Morlett's crocodile
- morning dress
- mosquito
- mosquitofish, Gambusia affinis
- moth miller, miller
- Mother Carey's chicken, Mother Carey's hen, Oceanites oceanicus
- motmot, momot
- motor vehicle, automotive vehicle
- motorboat, powerboat
- motorcycle, bike
- mouflon, moufflon, Ovis musimon
- mountain beaver, sewellel, Aplodontia rufa
- mountain chinchilla, mountain viscacha
- mountain goat, Rocky Mountain goat, Oreamnos americanus
- mountain gorilla, Gorilla gorilla beringei
- mountain nyala, Tragelaphus buxtoni
- mountain paca
- mountain quail, mountain partridge, Oreortyx picta palmeri
- mountain sheep
- mountain skink, Eumeces callicephalus
- mountain zebra, Equus zebra zebra
- mourning cloak, mourning cloak butterfly, Camberwell beauty, Nymphalis antiopa
- mourning dove, Zenaidura macroura
- mouse
- mouse-eared bat
- mouser
- mouthbreeder
- mud dauber
- mud puppy, Necturus maculosus
- mud turtle
- mudder
- muff
- muffler
- muishond
- mulberry
- mule
- mule deer, burro deer, Odocoileus hemionus
- mullet
- mullet, grey mullet, gray mullet
- mulloway, jewfish, Sciaena antarctica
- mummichog, Fundulus heteroclitus
- muntjac, barking deer
- murine
- murre
- muscovy duck, musk duck, Cairina moschata
- music box, musical box
- musk deer, Moschus moschiferus
- musk kangaroo, Hypsiprymnodon moschatus
- musk ox, musk sheep, Ovibos moschatus
- muskellunge, Esox masquinongy
- muskmelon, sweet melon
- muskrat, musquash, Ondatra zibethica
- mussel
- mustang
- mute swan, Cygnus olor
- Mutillidae, family Mutillidae
- mutton snapper, muttonfish, Lutjanus analis
- myna, mynah, mina, minah, myna bird, mynah bird
- myrtle warbler, myrtle bird, Dendroica coronata
- Myxine glutinosa
- N
- nail-tailed wallaby, nail-tailed kangaroo
- naked mole rat
- nanny, nanny-goat, she-goat
- napu, Tragulus Javanicus
- narwhal, narwal, narwhale, Monodon monoceros
- native cat, Dasyurus viverrinus
- natterjack, Bufo calamita
- Neandertal man, Neanderthal man, Neandertal, Neanderthal, Homo sapiens neanderthalensis
- neckerchief
- neckpiece
- necktie, tie
- neckwear
- nectarine
- needle
- needlefish, gar, billfish
- neem seed
- negligee, neglige, peignoir, wrapper, housecoat
- nematode, nematode worm, roundworm
- neolith
- nerita
- neritid, neritid gastropod
- neritina
- nest
- nestling, baby bird
- net melon, netted melon, nutmeg melon
- neuropteron, neuropteran, neuropterous insect
- New World beaver, Castor canadensis
- New World blackbird, blackbird
- New World chat, chat
- New World flycatcher, flycatcher, tyrant flycatcher, tyrant bird
- New World goldfinch, goldfinch, yellowbird, Spinus tristis
- New World jay
- New World least weasel, Mustela rixosa
- New World monkey, platyrrhine, platyrrhinian
- New World mouse
- New World opah, Lampris guttatus
- New World oriole, American oriole, oriole
- New World porcupine
- New World sparrow
- New World tapir, Tapirus terrestris
- New World vulture, cathartid
- New World warbler, wood warbler
- New Zealand wren
- Newfoundland, Newfoundland dog
- newt, triton
- night heron, night raven
- night lizard
- night snake, Hypsiglena torquata
- nightgown, gown, nightie, night-robe, nightdress
- nightingale, Luscinia megarhynchos
- nightshirt
- nightwear, sleepwear, nightclothes
- nilgai, nylghai, nylghau, blue bull, Boselaphus tragocamelus
- noctuid moth, noctuid, owlet moth
- Nomia melanderi, alkali bee
- nonpasserine bird
- nonstarter
- Norfolk terrier
- northern bog lemming, Synaptomys borealis
- northern cricket frog, Acris crepitans
- northern flying squirrel, Glaucomys sabrinus
- northern oriole, Icterus galbula
- northern phalarope, Lobipes lobatus
- northern pike, Esox lucius
- northern pocket gopher, Thomomys talpoides
- northern sea robin, Prionotus carolinus
- northern shrike, Lanius borealis
- northern whiting, Menticirrhus saxatilis
- Norway lobster, Nephrops norvegicus
- Norwegian elkhound, elkhound
- Norwich terrier
- noseband, nosepiece
- nothosaur
- notornis, takahe, Notornis mantelli
- nude mouse
- numbat, banded anteater, anteater, Myrmecobius fasciatus
- nurse shark, Ginglymostoma cirratum
- nut
- nutcracker
- nuthatch, nutcracker
- nutlet
- nyala, Tragelaphus angasi
- nymph
- nymphalid, nymphalid butterfly, brush-footed butterfly, four-footed butterfly
- O
- oar
- oarfish, king of the herring, ribbonfish, Regalecus glesne
- oboe, hautboy, hautbois
- obstetrical toad, midwife toad, Alytes obstetricans
- obstruction, obstructor, obstructer, impediment, impedimenta
- ocarina, sweet potato
- ocean pout, Macrozoarces americanus
- ocean sunfish, sunfish, mola, headfish
- ocellated turkey, Agriocharis ocellata
- ocelot, panther cat, Felis pardalis
- octopod
- octopus, devilfish
- odonate
- oil beetle
- oilbird, guacharo, Steatornis caripensis
- oilfish, Ruvettus pretiosus
- oilseed, oil-rich seed
- okra
- Old English sheepdog, bobtail
- old squaw, oldwife, Clangula hyemalis
- Old World beaver, Castor fiber
- Old World buffalo, buffalo
- Old World chat, chat
- Old World coot, Fulica atra
- Old World crayfish, ecrevisse
- Old World flycatcher, true flycatcher, flycatcher
- Old World jay
- Old World least weasel, Mustela nivalis
- Old World monkey, catarrhine
- Old World oriole, oriole
- Old World porcupine
- Old World quail
- Old World scops owl, Otus scops
- Old World vulture
- Old World warbler, true warbler
- Old world white pelican, Pelecanus onocrotalus
- oligochaete, oligochaete worm
- olive
- olm, Proteus anguinus
- olympic salamander, Rhyacotriton olympicus
- ommastrephes
- onager, Equus hemionus
- onion thrips, onion louse, Thrips tobaci
- onychophoran, velvet worm, peripatus
- opah, moonfish, Lampris regius
- openbill
- opener
- opossum rat
- opossum shrimp
- opossum, possum
- optical device
- orange
- orange bat, orange horseshoe bat, Rhinonicteris aurantius
- orange tortrix, tortrix, Argyrotaenia citrana
- orangutan, orang, orangutang, Pongo pygmaeus
- orb-weaving spider
- orchard oriole, Icterus spurius
- organ, pipe organ
- Oriental beetle, Asiatic beetle, Anomala orientalis
- oriental cockroach, oriental roach, Asiatic cockroach, blackbeetle, Blatta orientalis
- Oriental scops owl, Otus sunia
- ornithischian, ornithischian dinosaur
- ornithopod, ornithopod dinosaur
- Orpington
- orthopter, ornithopter
- orthopterous insect, orthopteron, orthopteran
- ortolan, ortolan bunting, Emberiza hortulana
- oryx, pasang
- osprey, fish hawk, fish eagle, sea eagle, Pandion haliaetus
- Ostariophysi, order Ostariophysi
- ostracoderm
- ostrich, Struthio camelus
- otter
- otter shrew, potamogale, Potamogale velox
- otterhound, otter hound
- ottoman, pouf, pouffe, puff, hassock
- outboard motorboat, outboard
- outerwear, overclothes
- oven
- ovenbird
- ovenbird, Seiurus aurocapillus
- overall, boilersuit, boilers suit
- overgarment, outer garment
- oviraptorid
- owl, bird of Minerva, bird of night, hooter
- owlet
- ox, wild ox
- oyster
- oystercatcher, oyster catcher
- P
- paca, Cuniculus paca
- pacer
- pacer, pacemaker, pacesetter
- Pacific bottlenose dolphin, Tursiops gilli
- Pacific cod, Alaska cod, Gadus macrocephalus
- Pacific giant salamander, Dicamptodon ensatus
- Pacific halibut, Hippoglossus stenolepsis
- Pacific herring, Clupea harengus pallasii
- Pacific newt
- Pacific ridley, olive ridley, Lepidochelys olivacea
- Pacific spiny dogfish, Squalus suckleyi
- Pacific sturgeon, white sturgeon, Sacramento sturgeon, Acipenser transmontanus
- Pacific tree toad, Hyla regilla
- Pacific tripletail, Lobotes pacificus
- Pacific walrus, Odobenus divergens
- packing needle
- packrat, pack rat, trade rat, bushytail woodrat, Neotoma cinerea
- paddle
- paddle steamer, paddle-wheeler
- paddlefish, duckbill, Polyodon spathula
- pademelon, paddymelon
- painted beauty, Vanessa virginiensis
- painted greenling, convict fish, convictfish, Oxylebius pictus
- painted sandgrouse, Pterocles indicus
- painted turtle, painted terrapin, painted tortoise, Chrysemys picta
- pajama, pyjama, pj's, jammies
- Paleacrita vernata
- paleolith
- palfrey
- pallas's sandgrouse, Syrrhaptes paradoxus
- pallet
- pallid bat, cave bat, Antrozous pallidus
- palm cat, palm civet
- palm nut, palm kernel
- palometa, California pompano, Palometa simillima
- palomino
- pan
- pan, cooking pan
- pangolin, scaly anteater, anteater
- panpipe, pandean pipe, syrinx
- papaw, pawpaw
- papaya
- paper
- paper cutter
- paper nautilus, nautilus, Argonaut, Argonauta argo
- paper wasp
- papillon
- parachute, chute
- parakeet, parrakeet, parroket, paraquet, paroquet, parroquet
- Paranthropus, genus Paranthropus
- parasitic jaeger, arctic skua, Stercorarius parasiticus
- pariah dog, pye-dog, pie-dog
- parr
- parr
- parrot
- parrotfish, polly fish, pollyfish
- part, portion, component part, component, constituent
- partition, divider
- partridge
- parula warbler, northern parula, Parula americana
- passenger car, coach, carriage
- passenger pigeon, Ectopistes migratorius
- passenger ship
- passion fruit
- patas, hussar monkey, Erythrocebus patas
- patka
- pea
- pea crab
- pea weevil, Bruchus pisorum
- peach
- peachick, pea-chick
- peacock
- peacock, peacock butterfly, Inachis io
- peafowl, bird of Juno
- peahen
- peanut worm, sipunculid
- peanut, earthnut, goober, goober pea, groundnut, monkey nut
- pear
- pearl oyster, Pinctada margaritifera
- pearlfish, pearl-fish
- pearly-shelled mussel
- peavey, peavy, cant dog, dog hook
- peba, nine-banded armadillo, Texas armadillo, Dasypus novemcinctus
- pecan
- peccary, musk hog
- pectoral sandpiper, jacksnipe, Calidris melanotos
- pedal, treadle, foot pedal, foot lever
- Pekinese, Pekingese, Peke
- Peking man
- pelagic bird, oceanic bird
- pelecaniform seabird
- pelican
- peludo, poyou, Euphractus sexcinctus
- pelycosaur
- Pembroke, Pembroke Welsh corgi
- pen
- pen
- pencil
- pencil sharpener
- penguin
- pennywhistle, tin whistle, whistle
- peplos, peplus, peplum
- perch
- Percheron
- percussion instrument, percussive instrument
- pere david's deer, elaphure, Elaphurus davidianus
- peregrine, peregrine falcon, Falco peregrinus
- periwinkle, winkle
- permit, Trachinotus falcatus
- pernyi moth, Antheraea pernyi
- Persian cat
- Persian lamb
- Persian melon
- persimmon
- person, individual, someone, somebody, mortal, soul
- pestle
- pestle, muller, pounder
- petrel
- pewee, peewee, peewit, pewit, wood pewee, Contopus virens
- phalanger, opossum, possum
- phalarope
- pharaoh ant, pharaoh's ant, Monomorium pharaonis
- phasianid
- phasmid, phasmid insect
- pheasant
- phenacomys
- phoebe, phoebe bird, Sayornis phoebe
- Phyllostomus hastatus
- physa
- piano, pianoforte, forte-piano
- pichiciago, pichiciego, fairy armadillo, chlamyphore, Chlamyphorus truncatus
- piciform bird
- pick
- pick, pickax, pickaxe
- pickerel
- pickerel frog, Rana palustris
- piculet
- piddock
- pied lemming
- pied-billed grebe, Podilymbus podiceps
- pierid, pierid butterfly
- pigeon
- pigeon guillemot, Cepphus columba
- pigeon hawk, merlin, Falco columbarius
- pigfish, giant pigfish, Achoerodus gouldii
- pigfish, hogfish, Orthopristis chrysopterus
- piglet, piggy, shoat, shote
- pika, mouse hare, rock rabbit, coney, cony
- pike
- pike-perch, pike perch
- pikeblenny
- pilchard, sardine, Sardina pilchardus
- pill bug
- pilot boat
- pilot whale, black whale, common blackfish, blackfish, Globicephala melaena
- pin, flag
- pin-tailed sandgrouse, pin-tailed grouse, Pterocles alchata
- pincer, pair of pincers, tweezer, pair of tweezers
- pinche, Leontocebus oedipus
- pine grosbeak, Pinicola enucleator
- pine marten, Martes martes
- pine nut, pignolia, pinon nut
- pine siskin, pine finch, Spinus pinus
- pine snake
- pine spittlebug
- pine vole, pine mouse, Pitymys pinetorum
- pineapple, ananas
- pinfish, sailor's-choice, squirrelfish, Lagodon rhomboides
- pink bollworm, Gelechia gossypiella
- pink cockatoo, Kakatoe leadbeateri
- pinniped mammal, pinniped, pinnatiped
- pinscher
- pintail, pin-tailed duck, Anas acuta
- pinto
- pinworm, threadworm, Enterobius vermicularis
- pip
- pipe
- pipe cleaner
- pipe cutter
- pipefish, needlefish
- piping crow, piping crow-shrike, Gymnorhina tibicen
- piping plover, Charadrius melodus
- pipistrelle, pipistrel, Pipistrellus pipistrellus
- pipit, titlark, lark
- piranha, pirana, caribe
- pirate, pirate ship
- pistachio, pistachio nut
- pit viper
- pitahaya
- pitch pipe
- Pithecanthropus, Pithecanthropus erectus, genus Pithecanthropus
- pitta
- placoderm
- plaice, Pleuronectes platessa
- plain turkey, Choriotis australis
- plain wanderer, Pedionomus torquatus
- plains pocket gopher, Geomys bursarius
- plains pocket mouse, Perognathus flavescens
- plains spadefoot, Scaphiopus bombifrons
- planarian, planaria
- plane, carpenter's plane, woodworking plane
- plane, planer, planing machine
- plant hopper, planthopper
- plant louse, louse
- plantigrade mammal, plantigrade
- plateau striped whiptail, Cnemidophorus velox
- platy, Platypoecilus maculatus
- platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus
- plectognath, plectognath fish
- plesiosaur, plesiosaurus
- pliers, pair of pliers, plyers
- Plott hound
- plover
- plow horse, plough horse
- plow, plough
- plum
- plunger, plumber's helper
- Plymouth Rock
- poacher, sea poacher, sea poker
- pochard, Aythya ferina
- pocket mouse
- pocket rat
- pocketed bat, pocketed freetail bat, Tadirida femorosacca
- pod, seedpod
- podicipitiform seabird
- pogge, armed bullhead, Agonus cataphractus
- pointer, Spanish pointer
- poker, stove poker, fire hook, salamander
- polar hare, Arctic hare, Lepus arcticus
- pole
- pole
- pole horse, poler
- polecat, fitch, foulmart, foumart, Mustela putorius
- police boat
- police dog
- policeman bird, black-necked stork, jabiru, Xenorhyncus asiaticus
- poll, poll parrot
- pollack, pollock, Pollachius pollachius
- polo mallet, polo stick
- polo pony
- polychaete, polychete, polychaete worm, polychete worm
- Polynesian tattler, Heteroscelus incanus
- polyphemus moth, Antheraea polyphemus
- pome, false fruit
- pomegranate
- pomelo, shaddock
- Pomeranian
- pomfret, Brama raii
- pompano
- pompon, black margate, Anisotremus surinamensis
- pontoon
- pony
- pony
- pooch, doggie, doggy, barker, bow-wow
- poodle, poodle dog
- poorwill, Phalaenoptilus nuttallii
- popinjay
- porbeagle, Lamna nasus
- porcupine, hedgehog
- porcupinefish, porcupine fish, Diodon hystrix
- porgy
- porkfish, pork-fish, Anisotremus virginicus
- porpoise
- portable circular saw, portable saw
- post horn
- post horse, post-horse, poster
- potato moth, potato tuber moth, splitworm, Phthorimaea operculella
- potato tuberworm, Phthorimaea operculella
- potbelly, potbelly stove
- potoroo
- potter bee
- potter wasp
- potto, kinkajou, Perodicticus potto
- pouched mole, marsupial mole, Notoryctus typhlops
- pouched mouse, marsupial mouse, marsupial rat
- pouter pigeon, pouter
- power drill
- power mower, motor mower
- power saw, saw, sawing machine
- power tool
- prairie chicken, prairie grouse, prairie fowl
- prairie dog, prairie marmot
- prairie gourd
- prairie rattlesnake, prairie rattler, Western rattlesnake, Crotalus viridis
- prairie vole, Microtus ochrogaster
- prancer
- pratincole, glareole
- pressure suit
- pricket
- prickleback
- prickly pear
- Primus stove, Primus
- proboscidean, proboscidian
- proboscis monkey, Nasalis larvatus
- procellariiform seabird
- proconsul
- procyonid
- projection
- pronghorn, prongbuck, pronghorn antelope, American antelope, Antilocapra americana
- prosimian
- protective garment
- protoceratops
- prototherian
- prune
- Przewalski's horse, Przevalski's horse, Equus caballus przewalskii, Equus caballus przevalskii
- psaltery
- psittacosaur, psittacosaurus
- psocid
- psocopterous insect
- psychodid
- ptarmigan
- Pteropus capestratus
- Pteropus hypomelanus
- pterosaur, flying reptile
- public transport
- puddingwife, pudding-wife, Halicoeres radiatus
- puff adder, Bitis arietans
- puffbird
- puffer, pufferfish, blowfish, globefish
- puffin
- pug, pug-dog
- puku, Adenota vardoni
- pulasan, pulassan
- Pulex irritans
- pull-through
- pumpkin seed
- pumpkinseed, Lepomis gibbosus
- punch, puncher
- punkie, punky, punkey, no-see-um, biting midge
- punt
- pupa
- purple finch, Carpodacus purpureus
- purple gallinule
- purple martin, Progne subis
- puttee
- pygmy chimpanzee, bonobo, Pan paniscus
- pygmy marmoset, Cebuella pygmaea
- pygmy mouse, Baiomys taylori
- pygmy sperm whale, Kogia breviceps
- pyralid, pyralid moth
- pyrrhuloxia, Pyrrhuloxia sinuata
- python
- pyxidium, pyxis
- Q
- quack-quack
- quagga, Equus quagga
- quahog, quahaug, hard-shell clam, hard clam, round clam, Venus mercenaria, Mercenaria mercenaria
- quail
- quandong nut
- quandong, blue fig
- quandong, quandang, quantong, native peach
- quarter horse
- quince
- quoit
- R
- rabbit ears
- rabbit, coney, cony
- raccoon dog, Nyctereutes procyonides
- raccoon, racoon
- racehorse, race horse, bangtail
- racer
- racerunner, race runner, six-lined racerunner, Cnemidophorus sexlineatus
- racing boat
- racing gig
- racing skiff, single shell
- racket, racquet
- raglan
- rail
- rail
- rain stick
- rainbow lorikeet, Trichoglossus moluccanus
- rainbow runner, Elagatis bipinnulata
- rainbow trout, Salmo gairdneri
- raisin
- raisin moth, Cadra figulilella
- rake
- ram
- ram, tup
- Rambouillet
- rambutan, rambotan
- ramrod
- ramrod
- rapeseed
- raspberry
- rat
- rat kangaroo, kangaroo rat
- rat snake
- rat terrier, ratter
- ratel, honey badger, Mellivora capensis
- ratite, ratite bird, flightless bird
- rattlesnake, rattler
- raven, Corvus corax
- ray
- razor
- razor clam, jackknife clam, knife-handle
- razor fish, razor-fish
- razorback, razorback hog, razorbacked hog
- razorbill, razor-billed auk, Alca torda
- rebozo
- receptacle
- recreational vehicle, RV, R.V.
- red admiral, Vanessa atalanta
- red bat, Lasiurus borealis
- red currant
- red deer, elk, American elk, wapiti, Cervus elaphus
- red drum, channel bass, redfish, Sciaenops ocellatus
- red eft, Notophthalmus viridescens
- red fox, Vulpes fulva
- red fox, Vulpes vulpes
- red goatfish, Mullus auratus
- red grouse, moorfowl, moorbird, moor-bird, moorgame, Lagopus scoticus
- red jungle fowl, Gallus gallus
- red phalarope, Phalaropus fulicarius
- red poll
- red porgy, Pagrus pagrus
- red rockfish, Sebastodes ruberrimus
- red siskin, Carduelis cucullata
- red snapper, Lutjanus blackfordi
- red squirrel, cat squirrel, Sciurus vulgaris
- red wolf, maned wolf, Canis rufus, Canis niger
- red-backed mouse, redback vole
- red-backed sandpiper, dunlin, Erolia alpina
- red-bellied snake, Storeria occipitamaculata
- red-bellied terrapin, red-bellied turtle, redbelly, Pseudemys rubriventris
- red-breasted merganser, Mergus serrator
- red-breasted nuthatch, Sitta canadensis
- red-breasted sapsucker, Sphyrapicus varius ruber
- red-breasted snipe, Limnodromus scolopaceus
- red-eyed vireo, Vireo olivaceous
- red-legged partridge, Alectoris ruffa
- red-necked grebe, Podiceps grisegena
- red-shafted flicker, Colaptes caper collaris
- red-shouldered hawk, Buteo lineatus
- red-spotted purple, Limenitis astyanax
- red-winged blackbird, redwing, Agelaius phoeniceus
- redbone
- redfin pickerel, barred pickerel, Esox americanus
- redfish
- redhead, Aythya americana
- redheaded woodpecker, redhead, Melanerpes erythrocephalus
- redhorse, redhorse sucker
- redpoll, Carduelis flammea
- redpoll, Carduelis hornemanni
- redshank, Tringa totanus
- redstart, redtail
- redtail, red-tailed hawk, Buteo jamaicensis
- redwing, Turdus iliacus
- reed bunting, Emberiza schoeniclus
- reef squirrelfish, Holocentrus coruscus
- refrigerator, icebox
- rein
- relation
- remora, suckerfish, sucking fish
- remount
- requiem shark
- restraint, constraint
- reticulated python, Python reticulatus
- Reticulitermes lucifugus
- retriever
- Reynard
- rhea, nandu, Pterocnemia pennata
- rhea, Rhea americana
- rhesus, rhesus monkey, Macaca mulatta
- rhinoceros beetle
- rhinoceros, rhino
- Rhode Island red
- Rhodesian man, Homo rhodesiensis
- Rhodesian ridgeback
- ribbon snake, Thamnophis sauritus
- ribbon worm, nemertean, nemertine, proboscis worm
- ribbonfish
- rice rat, Oryzomys palustris
- rice weevil, black weevil, Sitophylus oryzae
- ricer
- ridley
- rifleman bird, Acanthisitta chloris
- right whale
- righteye flounder, righteyed flounder
- ring ouzel, ring blackbird, ring thrush, Turdus torquatus
- ring-necked parakeet, Psittacula krameri
- ring-necked pheasant, Phasianus colchicus
- ringdove, Streptopelia risoria
- ringhals, rinkhals, spitting snake, Hemachatus haemachatus
- ringlet, ringlet butterfly
- ringneck snake, ring-necked snake, ring snake
- river boat
- river dolphin
- river limpet, freshwater limpet, Ancylus fluviatilis
- river otter, Lutra canadensis
- river shad, Alosa chrysocloris
- rivulus
- roach, Rutilus rutilus
- roadrunner, chaparral cock, Geococcyx californianus
- roan
- robalo
- robber fly, bee killer
- robber frog
- robe
- robin, American robin, Turdus migratorius
- robin, redbreast, robin redbreast, Old World robin, Erithacus rubecola
- rock bass, rock sunfish, Ambloplites rupestris
- rock beauty, Holocanthus tricolor
- Rock Cornish
- rock crab, Cancer irroratus
- rock dove, rock pigeon, Columba livia
- rock hopper, crested penguin
- rock python, rock snake, Python sebae
- rock rattlesnake, Crotalus lepidus
- rock sea bass, rock bass, Centropristis philadelphica
- rock squirrel, Citellus variegatus
- rock wallaby, rock kangaroo
- rock wren, Salpinctes obsoletus
- rock wren, Xenicus gilviventris
- rock, stone
- rocker arm, valve rocker
- rockfish
- rod
- roe deer, Capreolus capreolus
- rogue elephant
- roller
- roller, tumbler, tumbler pigeon
- rolling pin
- romper, romper suit
- roof
- rook, Corvus frugilegus
- rorqual, razorback
- rose apple
- rose chafer, rose beetle, Cetonia aurata
- rose chafer, rose bug, Macrodactylus subspinosus
- rose-colored starling, rose-colored pastor, Pastor sturnus, Pastor roseus
- roseate spoonbill, Ajaia ajaja
- rosefish, ocean perch, Sebastodes marinus
- rosy boa, Lichanura trivirgata
- rotisserie
- rotor
- Rottweiler
- rough fish
- rough green snake, Opheodrys aestivus
- rough-legged hawk, roughleg, Buteo lagopus
- rough-skinned newt, Taricha granulosa
- roughtail stingray, Dasyatis centroura
- round scad, cigarfish, quiaquia, Decapterus punctatus
- round whitefish, Menominee whitefish, Prosopium cylindraceum
- round-tailed muskrat, Florida water rat, Neofiber alleni
- router
- rove beetle
- rowanberry
- rowing boat
- rubber boa, tow-headed snake, Charina bottae
- ruby-crowned kinglet, ruby-crowned wren, Regulus calendula
- rudd, Scardinius erythrophthalmus
- ruddy duck, Oxyura jamaicensis
- ruddy turnstone, Arenaria interpres
- ruff, Philomachus pugnax
- ruffed grouse, partridge, Bonasa umbellus
- runner, blue runner, Caranx crysos
- rust mite
- rusty blackbird, rusty grackle, Euphagus carilonus
- rye
- S
- saber saw, jigsaw, reciprocating saw
- saber-toothed tiger, sabertooth
- sable
- sable antelope, Hippotragus niger
- sable, Martes zibellina
- sackcloth
- sacred ibis, Threskiornis aethiopica
- saddle horse, riding horse, mount
- saddle oyster, Anomia ephippium
- saddlebill, jabiru, Ephippiorhynchus senegalensis
- safflower seed
- sage grouse, sage hen, Centrocercus urophasianus
- sagebrush lizard, Sceloporus graciosus
- saiga, Saiga tatarica
- sailfish
- sailing vessel, sailing ship
- sailor's-choice, sailors choice, Haemulon parra
- Saint Bernard, St Bernard
- saki
- salmon
- salmonid
- Saluki, gazelle hound
- sambar, sambur, Cervus unicolor
- samisen, shamisen
- Samoyed, Samoyede
- sand cat
- sand cricket, Jerusalem cricket, Stenopelmatus fuscus
- sand dab
- sand fly, sandfly, Phlebotomus papatasii
- sand lance, sand launce, sand eel, launce
- sand lizard, Lacerta agilis
- sand rat
- sand rat, Meriones longifrons
- sand snake
- sand stargazer
- sand tiger, sand shark, Carcharias taurus, Odontaspis taurus
- sandbar shark, Carcharhinus plumbeus
- sandblaster
- sanderling, Crocethia alba
- sandgrouse, sand grouse
- sandpiper
- sanguinary ant, Formica sanguinea
- Santa Gertrudis
- sapodilla, sapodilla plum, sapota
- sapote, mammee, marmalade plum
- sapsucker
- Saratoga spittlebug, Aphrophora saratogensis
- sardine
- sargassum fish
- saskatoon, serviceberry, shadberry, juneberry
- sassaby, topi, Damaliscus lunatus
- satellite, artificial satellite, orbiter
- satin bowerbird, satin bird, Ptilonorhynchus violaceus
- saturniid, saturniid moth
- saurischian, saurischian dinosaur
- sauropod, sauropod dinosaur
- saury, billfish, Scomberesox saurus
- saw
- saw set
- sawfish
- sawfly
- sawmill
- sawyer, sawyer beetle
- sax, saxophone
- saxhorn
- scad
- scale insect
- scallop, scollop, escallop
- scaphopod
- scarab, scarabaeus, Scarabaeus sacer
- scarabaeid beetle, scarabaeid, scarabaean
- scarf
- scarlet tanager, Piranga olivacea, redbird, firebird
- scaup, scaup duck, bluebill, broadbill
- schipperke
- schistosome, blood fluke
- schizocarp
- schnauzer
- schoolmaster, Lutjanus apodus
- sciaenid fish, sciaenid
- scissors, pair of scissors
- scissortail, scissortailed flycatcher, Muscivora-forficata
- Scomberomorus maculatus
- scombroid, scombroid fish
- scooter
- scops owl
- scorpaenid, scorpaenid fish
- scorpaenoid, scorpaenoid fish
- scorpion
- scorpion fly
- scorpion shell
- scorpionfish, scorpion fish, sea scorpion
- Scotch terrier, Scottish terrier, Scottie
- scoter, scooter
- Scottish deerhound, deerhound
- scow
- scow
- screamer
- screech owl
- screech owl, Otus asio
- screw bean
- screwdriver
- scrubbird, scrub-bird, scrub bird
- sculpin
- scup, northern porgy, northern scup, Stenotomus chrysops
- scup, southern porgy, southern scup, Stenotomus aculeatus
- scythe
- sea bass
- sea boat
- sea bream, bream
- sea catfish
- sea chub
- sea cow, sirenian mammal, sirenian
- sea cucumber, holothurian
- sea duck
- sea eagle
- sea hare, Aplysia punctata
- sea lion
- sea louse, sea slater
- sea mouse
- sea otter, Enhydra lutris
- sea raven, Hemitripterus americanus
- sea robin, searobin
- sea scallop, giant scallop, Pecten magellanicus
- sea slug, nudibranch
- sea snake
- sea spider, pycnogonid
- sea trout
- sea turtle, marine turtle
- seahorse, sea horse
- seal
- seasnail
- seat
- secretary bird, Sagittarius serpentarius
- sedge warbler, sedge bird, sedge wren, reedbird, Acrocephalus schoenobaenus
- sedge wren, short-billed marsh wren, Cistothorus platensis
- seed beetle, seed weevil
- seed shrimp, mussel shrimp, ostracod
- sei whale, Balaenoptera borealis
- seizure-alert dog
- self-propelled vehicle
- Sennenhunde
- sergeant major, Abudefduf saxatilis
- serin
- serotine, European brown bat, Eptesicus serotinus
- serow
- serranid fish, serranid
- serval, Felis serval
- server
- setter
- seventeen-year locust, periodical cicada, Magicicada septendecim
- sewer rat
- sewing machine
- sewing needle
- shackle
- shad
- shaft
- shanny, Blennius pholis
- shape, form
- shaping tool
- sharksucker, Echeneis naucrates
- sharp-tailed grouse, sprigtail, sprig tail, Pedioecetes phasianellus
- sharpener
- Shasta salamander, Hydromantes shastae
- shearwater
- sheep
- sheep botfly, sheep gadfly, Oestrus ovis
- sheep frog
- sheep ked, sheep-tick, sheep tick, Melophagus Ovinus
- sheep-tick, sheep tick, Ixodes ricinus
- sheepshead porgy, Calamus penna
- sheepshead, Archosargus probatocephalus
- sheldrake
- shell, racing shell
- shepherd dog, sheepdog, sheep dog
- Shetland pony
- Shetland sheepdog, Shetland sheep dog, Shetland
- Shih-Tzu
- shin guard, shinpad
- shiner
- ship
- shipworm, teredinid
- shipwreck
- shire, shire horse
- shirt
- shoebill, shoebird, Balaeniceps rex
- short pants, shorts, trunks
- short-horned grasshopper, acridid
- short-tailed shrew, Blarina brevicauda
- shortfin mako, Isurus oxyrhincus
- shoulder pad
- shovel
- shovel
- shoveler, shoveller, broadbill, Anas clypeata
- shovelhead, bonnethead, bonnet shark, Sphyrna tiburo
- showboat
- shrew mole
- shrew, shrewmouse
- shrike
- shrimp
- shrimper
- shrimpfish, shrimp-fish
- siamang, Hylobates syndactylus, Symphalangus syndactylus
- Siamese cat, Siamese
- Siberian husky
- side-blotched lizard, sand lizard, Uta stansburiana
- side-wheeler
- sidewinder, horned rattlesnake, Crotalus cerastes
- sierra, Scomberomorus sierra
- signaling device
- sild
- silks
- silkworm
- silkworm, giant silkworm, wild wilkworm
- silky anteater, two-toed anteater, Cyclopes didactylus
- silky pocket mouse, Perognathus flavus
- silky tamarin, Leontocebus rosalia
- silky terrier, Sydney silky
- silurid, silurid fish
- silver fox
- silver hake, Merluccius bilinearis, whiting
- silver jenny, Eucinostomus gula
- silver perch, mademoiselle, Bairdiella chrysoura
- silverback
- silverfish, Lepisma saccharina
- silversides, silverside
- simian
- simple fruit, bacca
- Sinanthropus, genus Sinanthropus
- single-reed instrument, single-reed woodwind
- singlestick, fencing stick, backsword
- siren
- siskin, Carduelis spinus
- sitar
- Sivapithecus
- skate
- skeleton shrimp
- sketcher
- ski mask
- ski pole
- skiff
- skimmer
- skimmer
- skink, scincid, scincid lizard
- skipjack, Atlantic bonito, Sarda sarda
- skipjack, skipjack tuna, Euthynnus pelamis
- skirt
- skua, bonxie
- skunk, polecat, wood pussy
- Skye terrier
- slate pencil
- slave ant
- slave-making ant, slave-maker
- sled dog, sledge dog
- sleeper
- sleeper, sleeper goby
- sleeve, arm
- slender loris, Loris gracilis
- slender salamander, worm salamander
- slender-tailed meerkat, Suricata suricatta
- slice bar
- slider, yellow-bellied terrapin, Pseudemys scripta
- slippery dick, Halicoeres bivittatus
- slops
- sloth bear, Melursus ursinus, Ursus ursinus
- sloth, tree sloth
- slow loris, Nycticebus tardigradua, Nycticebus pygmaeus
- slug
- small boat
- small civet, Viverricula indica, Viverricula malaccensis
- small white, Pieris rapae
- smalleye hammerhead, Sphyrna tudes
- smallmouth, smallmouth bass, smallmouthed bass, smallmouth black bass, smallmouthed black bass, Micropterus dolomieu
- smelt
- smew, Mergus albellus
- Smiledon californicus
- smooth dogfish
- smooth green snake, Opheodrys vernalis
- smooth hammerhead, Sphyrna zygaena
- smooth softshell, Trionyx muticus
- smoothhound, smoothhound shark, Mustelus mustelus
- snail
- snail darter, Percina tanasi
- snake mackerel, Gempylus serpens
- snake muishond, Poecilogale albinucha
- snakebird, anhinga, darter
- snakefly
- snapper
- snapper, Chrysophrys auratus
- snapping turtle
- snipe
- snipefish, bellows fish
- snout beetle
- snow bunting, snowbird, snowflake, Plectrophenax nivalis
- snow leopard, ounce, Panthera uncia
- snowmobile
- snowplow, snowplough
- snowshoe hare, snowshoe rabbit, varying hare, Lepus americanus
- snowsuit
- snowy egret, snowy heron, Egretta thula
- snuffer
- soapfish
- sock
- sockeye, sockeye salmon, red salmon, blueback salmon, Oncorhynchus nerka
- sofa, couch, lounge
- soft scale
- soft tick, argasid
- soft-coated wheaten terrier
- soft-shell clam, steamer, steamer clam, long-neck clam, Mya arenaria
- soft-shell crab, soft-shelled crab
- soft-shelled turtle, pancake turtle
- solan, solan goose, solant goose, Sula bassana
- soldering iron
- soldierfish, soldier-fish
- sole
- solenogaster, aplacophoran
- solitaire
- solitary vireo, Vireo solitarius
- song sparrow, Melospiza melodia
- song thrush, mavis, throstle, Turdus philomelos
- songbird, songster
- Sonoran whipsnake, Masticophis bilineatus
- sorb, sorb apple
- sorrel
- souari nut
- soupfin shark, soupfin, soup-fin, Galeorhinus zyopterus
- sour gourd, monkey bread
- source of illumination
- South American poison toad
- South American sea lion, Otaria Byronia
- southeastern pocket gopher, Geomys pinetis
- southern bog lemming, Synaptomys cooperi
- southern cabbage butterfly, Pieris protodice
- southern flounder, Paralichthys lethostigmus
- southern flying squirrel, Glaucomys volans
- southern spadefoot, Scaphiopus multiplicatus
- southwestern toad, Bufo microscaphus
- sow
- sow bug
- soy, soybean, soya bean
- spacesuit
- spadefish, angelfish, Chaetodipterus faber
- spadefoot, spadefoot toad
- spaniel
- Spanish fly
- Spanish grunt, Haemulon macrostomum
- Spanish mackerel
- Spanish mackerel, Scomber colias
- spar
- sparid, sparid fish
- spark lever
- sparling, European smelt, Osmerus eperlanus
- sparrow hawk, Accipiter nisus
- sparrow hawk, American kestrel, kestrel, Falco sparverius
- sparrow, true sparrow
- spat, gaiter
- spatula
- spawner
- spear, lance, shaft
- spearfish
- spearnose bat
- speckled rattlesnake, Crotalus mitchellii
- speedboat
- sperm whale, cachalot, black whale, Physeter catodon
- sphecoid wasp, sphecoid
- sphenisciform seabird
- spider
- spider crab
- spider mite, tetranychid
- spider monkey, Ateles geoffroyi
- spindle
- spinet
- spinning rod
- spiny dogfish
- spiny lizard
- spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish
- spiny puffer
- spiny softshell, Trionyx spiniferus
- spirit stove
- spirula, Spirula peronii
- spittle insect, spittlebug
- spitz
- Spodoptera exigua
- Spodoptera frugiperda
- spoon
- spoonbill
- Spork
- sporting dog, gun dog
- sports implement
- spotted antbird, Hylophylax naevioides
- spotted crake, Porzana porzana
- spotted eagle ray, spotted ray, Aetobatus narinari
- spotted flycatcher, Muscicapa striata, Muscicapa grisola
- spotted hyena, laughing hyena, Crocuta crocuta
- spotted lynx, Lynx pardina
- spotted owl, Strix occidentalis
- spotted salamander, Ambystoma maculatum
- spotted salamander, fire salamander, Salamandra maculosa
- spotted sandpiper, Actitis macularia
- spotted skunk, little spotted skunk, Spilogale putorius
- spotted sunfish, stumpknocker, Lepomis punctatus
- spotted weakfish, spotted sea trout, spotted squeateague, Cynoscion nebulosus
- spreader
- spring cankerworm
- spring chicken
- spring peeper, Hyla crucifer
- springbok, springbuck, Antidorcas marsupialis, Antidorcas euchore
- springer spaniel, springer
- spruce bark beetle, Dendroctonus rufipennis
- spruce gall aphid, Adelges abietis
- spruce grouse, Canachites canadensis
- squab
- squash bug, Anasa tristis
- squash racket, squash racquet, bat
- squeegee
- squeezer
- squid
- squirrel
- squirrel monkey, Saimiri sciureus
- squirrelfish
- stabilizer bar, anti-sway bar
- stablemate, stable companion
- stacks
- staff
- Staffordshire bullterrier, Staffordshire bull terrier
- stag beetle
- staghound
- stair-rod
- stalking-horse
- stamping machine, stamper
- standard poodle
- standard schnauzer
- stargazer
- starling
- starnose mole, star-nosed mole, Condylura cristata
- stealth aircraft
- steam iron
- steamboat
- steamer
- steamer, steamship
- steamroller, road roller
- steed
- steel
- steel-wool pad
- steenbok, steinbok, Raphicerus campestris
- stegosaur, stegosaurus, Stegosaur stenops
- Steller sea lion, Steller's sea lion, Eumetopias jubatus
- Steller's sea cow, Hydrodamalis gigas
- stenopterygius, Stenopterygius quadrisicissus
- stepper, high stepper
- sternwheeler
- stick
- stick
- stick, control stick, joystick
- stickleback, prickleback
- sticktight, sticktight flea, Echidnophaga gallinacea
- stilt
- stilt, Australian stilt
- stilt, stiltbird, longlegs, long-legs, stilt plover, Himantopus stilt
- stingray
- stirrer
- stob
- stocking
- stole
- stomacher
- stomatopod, stomatopod crustacean
- stone bass, wreckfish, Polyprion americanus
- stone crab, Menippe mercenaria
- stone curlew, thick-knee, Burhinus oedicnemus
- stone marten, beech marten, Martes foina
- stonechat, Saxicola torquata
- stonefish, Synanceja verrucosa
- stonefly, stone fly, plecopteran
- stool
- storage space
- stork
- storm petrel
- stormy petrel, northern storm petrel, Hydrobates pelagicus
- stove, kitchen stove, range, kitchen range, cooking stove
- straightedge
- straitjacket, straightjacket
- strap
- strawberry
- strawworm, jointworm
- Streptopelia turtur
- strickle
- strickle
- stringed instrument
- striped bass, striper, Roccus saxatilis, rockfish
- striped drum, Equetus pulcher
- striped hyena, Hyaena hyaena
- striped killifish, mayfish, may fish, Fundulus majalis
- striped marlin, Makaira mitsukurii
- striped muishond, Ictonyx striata
- striped mullet, Mugil cephalus
- striped skunk, Mephitis mephitis
- strop
- structure, construction
- sturgeon
- stylus, style
- styracosaur, styracosaurus
- submersible, submersible warship
- substance
- substance
- sucker
- sugarberry, hackberry
- suit, suit of clothes
- sulphur butterfly, sulfur butterfly
- sulphur-crested cockatoo, Kakatoe galerita, Cacatua galerita
- summer flounder, Paralichthys dentatus
- summer tanager, summer redbird, Piranga rubra
- sunfish, centrarchid
- sunflower seed
- sunsuit
- superbug, Bemisia tabaci, poinsettia strain
- supporting structure
- surfbird, Aphriza virgata
- surfboat
- surfperch, surffish, surf fish
- surgeonfish
- suricate, Suricata tetradactyla
- Surinam toad, Pipa pipa, Pipa americana
- suslik, souslik, Citellus citellus
- Sussex spaniel
- swab
- swab, swob, mop
- swaddling clothes, swaddling bands
- swallow
- swallow-tailed kite, swallow-tailed hawk, Elanoides forficatus
- swamp rabbit, canecutter, swamp hare, Sylvilagus aquaticus
- swamp sparrow, Melospiza georgiana
- swan
- swatter, flyswatter, flyswat
- sweat suit, sweatsuit, sweats, workout suit
- sweater, jumper
- sweeper
- sweet-potato whitefly
- swift
- swiftlet, Collocalia inexpectata
- swimming crab
- swimming trunks, bathing trunks
- swimsuit, swimwear, bathing suit, swimming costume, bathing costume
- swine
- swizzle stick
- sword, blade, brand, steel
- swordfish, Xiphias gladius
- swordtail, helleri, topminnow, Xyphophorus helleri
- synapsid, synapsid reptile
- synthesizer, synthesiser
- Syrian bear, Ursus arctos syriacus
- T
- tabby, queen
- tabby, tabby cat
- table
- table saw
- tachina fly
- tadpole shrimp
- tadpole, polliwog, pollywog
- taenia
- tailed frog, bell toad, ribbed toad, tailed toad, Ascaphus trui
- tailor's chalk
- tailorbird, Orthotomus sutorius
- taipan, Oxyuranus scutellatus
- takin, gnu goat, Budorcas taxicolor
- talapoin, Cercopithecus talapoin
- tamandua, tamandu, lesser anteater, Tamandua tetradactyla
- tamarau, tamarao, Bubalus mindorensis, Anoa mindorensis
- tamarin, lion monkey, lion marmoset, leoncita
- tamarind, tamarindo
- tamarisk gerbil, Meriones unguiculatus
- tamp, tamper, tamping bar
- tanager
- tandoor
- tangelo, ugli, ugli fruit
- tank, army tank, armored combat vehicle, armoured combat vehicle
- tapeworm, cestode
- tapir
- tappet
- tarahumara frog, Rana tarahumarae
- tarantula
- tarpan, Equus caballus gomelini
- tarpon, Tarpon atlanticus
- tarsier
- Tarsius glis
- Tarsius syrichta
- Tasmanian devil, ursine dasyure, Sarcophilus hariisi
- tatouay, cabassous, Cabassous unicinctus
- tattler
- tautog, blackfish, Tautoga onitis
- tawny eagle, Aquila rapax
- tawny owl, Strix aluco
- tayra, taira, Eira barbara
- tea ball
- tea tortrix, tortrix, Homona coffearia
- teal
- teg
- teiid lizard, teiid
- teju
- ten-spined stickleback, Gasterosteus pungitius
- tench, Tinca tinca
- tender
- tender, ship's boat, pinnace, cutter
- Tennessee walker, Tennessee walking horse, Walking horse, Plantation walking horse
- tennis racket, tennis racquet
- tenrec, tendrac
- tent caterpillar
- tent-caterpillar moth, Malacosoma americana
- tent-caterpillar moth, Malacosoma disstria
- teredo
- termite, white ant
- tern
- terrapin
- tetra
- Texas toad, Bufo speciosus
- Texas tortoise
- therapsid, protomammal
- theremin
- theropod, theropod dinosaur, bird-footed dinosaur
- thick-billed murre, Uria lomvia
- thickhead, whistler
- thigh pad
- thin-shelled mussel
- Thomson's gazelle, Gazella thomsoni
- thong
- thornbill
- thorny skate, Raja radiata
- thoroughbred
- thrasher, mocking thrush
- threadfin
- threadfish, thread-fish, Alectis ciliaris
- three-spined stickleback, Gasterosteus aculeatus
- three-toed sloth, ai, Bradypus tridactylus
- thresher, thrasher, thresher shark, fox shark, Alopius vulpinus
- thrips, thrip, thripid
- throat protector
- thrush
- thrush nightingale, Luscinia luscinia
- thunder snake, worm snake, Carphophis amoenus
- thylacine, Tasmanian wolf, Tasmanian tiger, Thylacinus cynocephalus
- thysanopter, thysanopteron, thysanopterous insect
- thysanuran insect, thysanuron
- Tibetan terrier, chrysanthemum dog
- tick
- tie rod
- tiercel, tercel, tercelet
- tiger beetle
- tiger cat
- tiger cowrie, Cypraea tigris
- tiger moth
- tiger rattlesnake, Crotalus tigris
- tiger salamander, Ambystoma tigrinum
- tiger shark, Galeocerdo cuvieri
- tiger snake, Notechis scutatus
- tiger, Panthera tigris
- tights, leotards
- tiglon, tigon
- tile cutter
- tilefish, Lopholatilus chamaeleonticeps
- tiller
- timber rattlesnake, banded rattlesnake, Crotalus horridus horridus
- timber wolf, grey wolf, gray wolf, Canis lupus
- tinamou, partridge
- tineid, tineid moth
- tineoid, tineoid moth
- tire iron, tire tool
- titi, titi monkey
- titmouse, tit
- toadfish, Opsanus tau
- toaster
- toaster oven
- tobacco hornworm, tomato worm, Manduca sexta
- tobacco moth, cacao moth, Ephestia elutella
- tobacco thrips, Frankliniella fusca
- tody
- toilet seat
- toiletry, toilet articles
- tom, tomcat
- tomato hornworm, potato worm, Manduca quinquemaculata
- tomtate, Haemulon aurolineatum
- tongue worm, pentastomid
- tonguefish, tongue-fish
- tongueless frog
- tonka bean, coumara nut
- toothed whale
- toothpick
- top
- topknot
- topminnow, poeciliid fish, poeciliid, live-bearer
- tortoise
- tortoiseshell, tortoiseshell butterfly
- tortoiseshell, tortoiseshell-cat, calico cat
- tortricid, tortricid moth
- toucan
- touraco, turaco, turacou, turakoo
- tower
- towhee
- toy dog, toy
- toy poodle
- toy spaniel
- toy terrier
- trachodon, trachodont
- track, rail, rails, runway
- tracked vehicle
- tractor
- tragopan
- trailer
- trailer, house trailer
- tramp steamer, tramp
- trap
- trap-door spider
- tray
- tree cricket
- tree frog, tree-frog
- tree lizard, Urosaurus ornatus
- tree shrew
- tree sparrow, Passer montanus
- tree sparrow, Spizella arborea
- tree squirrel
- tree swallow, tree martin, Hirundo nigricans
- tree swift, crested swift
- tree toad, tree frog, tree-frog
- tree wallaby, tree kangaroo
- treehopper
- triangle
- triceratops
- trichina, Trichinella spiralis
- trichopterous insect, trichopteran, trichopteron
- tricycle, trike, velocipede
- triggerfish
- tripletail
- trogon
- trombiculid
- trombidiid
- trombone
- tropic bird, tropicbird, boatswain bird
- trotting horse, trotter
- trouser press, pants presser
- trouser, pant
- trout
- trowel
- truck, motortruck
- true bug
- true frog, ranid
- true lobster
- true marmoset
- true toad
- trumpeter
- trumpeter, trumpeter swan, Cygnus buccinator
- trumpetfish, Aulostomus maculatus
- tsetse fly, tsetse, tzetze fly, tzetze, glossina
- tuatara, Sphenodon punctatum
- tub gurnard, yellow gurnard, Trigla lucerna
- tufted puffin, Lunda cirrhata
- tufted titmouse, Parus bicolor
- tugboat, tug, towboat, tower
- tumblebug
- tuna, Anguilla sucklandii
- tuna, tunny
- tundra swan, Cygnus columbianus
- tuning fork
- turban
- turbot, Psetta maxima
- turkey, Meleagris gallopavo
- turner, food turner
- turnstone
- turtle
- turtledove
- tusker
- tussah, tusseh, tussur, tussore, tusser, Antheraea mylitta
- tussock caterpillar
- twitterer
- two-spotted ladybug, Adalia bipunctata
- two-toed sloth, unau, unai, Choloepus didactylus
- two-toed sloth, unau, unai, Choloepus hoffmanni
- typical jerboa
- tyrannid
- tyrannosaur, tyrannosaurus, Tyrannosaurus rex
- U
- uakari
- umbrella bird, Cephalopterus ornatus
- undergarment, unmentionable
- underwear, underclothes, underclothing
- underwing
- unicycle, monocycle
- uniform
- upland sandpiper, upland plover, Bartramian sandpiper, Bartramia longicauda
- upset, swage
- urial, Ovis vignei
- urodele, caudate
- utahraptor, superslasher
- utensil
- V
- vacuum, vacuum cleaner
- valley pocket gopher, Thomomys bottae
- vampire bat, true vampire bat
- vaquita, Phocoena sinus
- varied Lorikeet, Glossopsitta versicolor
- vedalia, Rodolia cardinalis
- veery, Wilson's thrush, Hylocichla fuscescens
- velociraptor
- velvet ant
- venomous lizard
- verdin, Auriparus flaviceps
- vermillion flycatcher, firebird, Pyrocephalus rubinus mexicanus
- vermillion rockfish, rasher, Sebastodes miniatus
- vervet, vervet monkey, Cercopithecus aethiops pygerythrus
- vesper sparrow, grass finch, Pooecetes gramineus
- vespertilian bat, vespertilionid
- vespid, vespid wasp
- vessel
- vest, waistcoat
- vestment
- vibraphone, vibraharp, vibes
- viceroy, Limenitis archippus
- vicuna, Vicugna vicugna
- vine snake
- vinegar fly
- viper
- vireo
- virginal, pair of virginals
- Virginia deer, white tail, whitetail, white-tailed deer, whitetail deer, Odocoileus Virginianus
- Virginia oyster
- viscacha, chinchillon, Lagostomus maximus
- viverrine, viverrine mammal
- viviparous eelpout, Zoarces viviparus
- vixen
- vizsla, Hungarian pointer
- vole, field mouse
- vulture
- W
- waffle iron
- wagon, waggon
- wagtail
- wahoo, Acanthocybium solandri
- Walker hound, Walker foxhound
- walking leaf, leaf insect
- walking stick
- walking stick, walkingstick, stick insect
- wall creeper, tichodrome, Tichodroma muriaria
- wall unit
- wallaby, brush kangaroo
- walnut
- walrus, seahorse, sea horse
- wandering albatross, Diomedea exulans
- wapiti, elk, American elk, Cervus elaphus canadensis
- warble fly
- warbler
- wardrobe, closet, press
- warhorse
- warship, war vessel, combat ship
- warthog
- washer, automatic washer, washing machine
- washstand, wash-hand stand
- wasp
- watchdog, guard dog
- water beetle
- water boatman, boat bug
- water buffalo, water ox, Asiatic buffalo, Bubalus bubalis
- water bug
- water chevrotain, water deer, Hyemoschus aquaticus
- water dog
- water moccasin
- water moccasin, cottonmouth, cottonmouth moccasin, Agkistrodon piscivorus
- water ouzel, dipper
- water rat
- water scooter, sea scooter, scooter
- water scorpion
- water shrew
- water snake
- water spaniel
- water strider, pond-skater, water skater
- water thrush
- water vole, Richardson vole, Microtus richardsoni
- water vole, water rat, Arvicola amphibius
- waterbuck
- waterdog
- watermelon
- waxwing
- weakfish, Cynoscion regalis
- weapon, arm, weapon system
- weasel
- weaver, weaverbird, weaver finch
- web spinner
- web-spinning mite
- web-toed salamander
- webbing clothes moth, webbing moth, Tineola bisselliella
- webworm
- webworm moth
- weeder, weed-whacker
- weeds, widow's weeds
- weevil
- Weimaraner
- weka, maori hen, wood hen
- welder's mask
- Welsh pony
- Welsh springer spaniel
- Welsh terrier
- Welsh, Welsh Black
- West Highland white terrier
- western chimpanzee, Pan troglodytes verus
- western coral snake, Micruroides euryxanthus
- Western diamondback, Western diamondback rattlesnake, Crotalus atrox
- western fence lizard, swift, blue-belly, Sceloporus occidentalis
- western grey squirrel, western gray squirrel, Sciurus griseus
- western lowland gorilla, Gorilla gorilla gorilla
- western meadowlark, Sturnella neglecta
- western narrow-mouthed toad, Gastrophryne olivacea
- western red-backed salamander, Plethodon vehiculum
- Western ribbon snake, Thamnophis proximus
- western skink, Eumeces skiltonianus
- western spadefoot, Scaphiopus hammondii
- western tanager, Piranga ludoviciana
- western toad, Bufo boreas
- western whiptail, Cnemidophorus tigris
- wet suit
- wether
- whale
- whale louse
- whale shark, Rhincodon typus
- whale sucker, whalesucker, Remilegia australis
- whaleboat
- wharf rat
- wheat berry
- wheatear
- wheel bug, Arilus cristatus
- whelk
- wherry
- wherry, Norfolk wherry
- whiff
- whiffletree, whippletree, swingletree
- whinchat, Saxicola rubetra
- whip-scorpion, whip scorpion
- whip-snake, whip snake, whipsnake
- whippoorwill, Caprimulgus vociferus
- whiptail, whiptail lizard
- whirligig beetle
- whisk
- whistle
- whistling swan, Cygnus columbianus columbianus
- white admiral, Limenitis camilla
- white crappie, Pomoxis annularis
- white croaker, chenfish, kingfish, Genyonemus lineatus
- white croaker, queenfish, Seriphus politus
- white goods
- white marlin, Makaira albida
- white mullet, Mugil curema
- white pelican, Pelecanus erythrorhynchos
- white perch, silver perch, Morone americana
- white rhinoceros, Ceratotherium simum, Diceros simus
- white stork, Ciconia ciconia
- white whale, beluga, Delphinapterus leucas
- white wolf, Arctic wolf, Canis lupus tundrarum
- white-bellied swallow, tree swallow, Iridoprocne bicolor
- white-breasted nuthatch, Sitta carolinensis
- white-chinned petrel, Procellaria aequinoctialis
- white-crowned sparrow, Zonotrichia leucophrys
- white-footed mouse, vesper mouse, Peromyscus leucopus
- white-headed stilt, Himantopus himantopus leucocephalus
- white-lipped peccary, Tayassu pecari
- white-rumped shrike, Lanius ludovicianus excubitorides
- white-tailed jackrabbit, whitetail jackrabbit, Lepus townsendi
- white-tailed kite, Elanus leucurus
- white-throated sparrow, whitethroat, Zonotrichia albicollis
- whitebait
- whitefish
- whitefly
- whitetail prairie dog, Cynomys gunnisoni
- whitetip shark, oceanic whitetip shark, white-tipped shark, Carcharinus longimanus
- whitetip shark, reef whitetip shark, Triaenodon obseus
- whiting
- whiting
- whiting, Merlangus merlangus, Gadus merlangus
- whole snipe, Gallinago gallinago
- whooper, whooper swan, Cygnus cygnus
- whydah, whidah, widow bird
- widgeon, wigeon, Anas penelope
- wiggler, wriggler
- wild ass
- wild boar, boar, Sus scrofa
- wild dog
- wild duck
- wild goat
- wild horse
- wild sheep
- wildcat
- willet, Catoptrophorus semipalmatus
- Wilson's phalarope, Steganopus tricolor
- Wilson's snipe, Gallinago gallinago delicata
- Wilson's warbler, Wilson's blackcap, Wilsonia pusilla
- wimple
- window oyster, windowpane oyster, capiz, Placuna placenta
- windowpane, Scophthalmus aquosus
- winter flounder, blackback flounder, lemon sole, Pseudopleuronectes americanus
- winter melon
- winter wren, Troglodytes troglodytes
- wintergreen, boxberry, checkerberry, teaberry, spiceberry
- wire cutter
- wire stripper
- wire-haired fox terrier
- wirehair, wirehaired terrier, wire-haired terrier
- wireworm
- wisent, aurochs, Bison bonasus
- wolf
- wolf spider, hunting spider
- wolffish, wolf fish, catfish
- wolfhound
- wolverine, carcajou, skunk bear, Gulo luscus
- woman's clothing
- wombat
- wood ant, Formica rufa
- wood duck, summer duck, wood widgeon, Aix sponsa
- wood hoopoe
- wood ibis, wood stork, flinthead, Mycteria americana
- wood ibis, wood stork, Ibis ibis
- wood mouse
- wood pigeon, ringdove, cushat, Columba palumbus
- wood rabbit, cottontail, cottontail rabbit
- wood rat, wood-rat
- wood swallow, swallow shrike
- wood thrush, Hylocichla mustelina
- wood tick, American dog tick, Dermacentor variabilis
- wood warbler, Phylloscopus sibilatrix
- wood-frog, wood frog, Rana sylvatica
- woodborer, borer
- woodcock
- woodhewer, woodcreeper, wood-creeper, tree creeper
- woodland caribou, Rangifer caribou
- woodlouse, slater
- woodpecker, peckerwood, pecker
- woodwind, woodwind instrument, wood
- woodworm
- woolly adelgid
- woolly alder aphid, Prociphilus tessellatus
- woolly aphid, woolly plant louse
- woolly apple aphid, American blight, Eriosoma lanigerum
- woolly bear, woolly bear caterpillar
- woolly indris, Avahi laniger
- woolly mammoth, northern mammoth, Mammuthus primigenius
- woolly monkey
- woolly rhinoceros, Rhinoceros antiquitatis
- workhorse
- worm lizard
- wrasse
- wren warbler
- wren, jenny wren
- wren-tit, Chamaea fasciata
- wrench, spanner
- wrist pad
- writing implement
- wrymouth, ghostfish, Cryptacanthodes maculatus
- wryneck
- X
- Y
- yak, Bos grunniens
- yearling
- yellow bass, Morone interrupta
- yellow goatfish, Mulloidichthys martinicus
- yellow jack, Caranx bartholomaei
- yellow jacket, yellow hornet, Vespula maculifrons
- yellow perch, Perca flavescens
- yellow warbler, golden warbler, yellowbird, Dendroica petechia
- yellow-bellied sapsucker, Sphyrapicus varius
- yellow-breasted bunting, Emberiza aureola
- yellow-crowned night heron, Nyctanassa violacea
- yellow-fever mosquito, Aedes aegypti
- yellow-shafted flicker, Colaptes auratus, yellowhammer
- yellow-throated marten, Charronia flavigula
- yellowbelly marmot, rockchuck, Marmota flaviventris
- yellowfin croaker, surffish, surf fish, Umbrina roncador
- yellowfin mojarra, Gerres cinereus
- yellowfin, yellowfin tuna, Thunnus albacares
- yellowhammer, yellow bunting, Emberiza citrinella
- yellowlegs
- yellowtail flounder, Limanda ferruginea
- yellowtail, Seriola dorsalis
- yellowtail, yellowtail snapper, Ocyurus chrysurus
- yellowthroat
- Yorkshire terrier
- Yosemite toad, Bufo canorus
- young bird
- young fish
- Z
- zebra
- zebra mussel, Dreissena polymorpha
- zebra-tailed lizard, gridiron-tailed lizard, Callisaurus draconoides
- zill
- Zinjanthropus, genus Zinjanthropus
- zither, cither, zithern
- zoophyte