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- G.I. Joe (pigeon)US Army homing pigeon in WWII
- Gabriel StroblGabriel Strobl (3 November 1846 in Unzmarkt, Styria, Austrian Empire – 15 March 1925 in Ad
- Gadfly petrelGenus of birds
- GadiformesOrder of fishes
- GadusGenus of fishes
- GalahType of cockatoo
- Galah, VictoriaGalah is a locality situated on the Mallee Highway and Pinnaroo railway line in the Sunray
- Galápagos doveThe Galápagos dove (Zenaida galapagoensis) is a species of bird in the family Columbidae.
- GalatheidaeThe Galatheidae are a family of squat lobsters.
- GalatheoideaThe Galatheoidea are a superfamily of decapod crustaceans comprising the porcelain crabs a
- GalbalcyrhynchusGalbalcyrhynchus is a genus of birds in the Galbulidae family. Established by Marc Athanes
- GalbulaGenus of birds
- GalbuliSuborder of birds
- GaleaspidaClass of chordates
- GaleomorphiSuperorder of sharks
- GaleridaGenus of birds
- GalerucaGenus of beetles
- Galeruca tanacetiGaleruca tanaceti is a species of leaf beetle found in the Palearctic realm, and is the ty
- GalerucinaeThe Galerucinae are a large subfamily of the leaf beetles (Chrysomelidae), containing abou
- GaleruciniGalerucini is a tribe of skeletonizing leaf beetles in the family Chrysomelidae. There are
- GalesaurusGalesaurus (from the Greek roots for 'weasel' and 'lizard') is an extinct genus of carnivo
- Gall waspFamily of wasps
- Gall-inducing insectInsect causing the growth of galls within plants
- GallicolumbaGenus of birds
- GallinagoGenus of birds
- GallirallusGenus of birds
- GalloisianaGalloisiana is a genus of insects in the family Grylloblattidae found in East Asia. It con
- GalloperdixGenus of birds
- GallopheasantGenus of birds
- GamatavusGamatavus (meaning "Picada do Gama great-grandfather") is a genus of silesaurid dinosaurif
- Gambian pouched ratSpecies of rodent
- Game farmDesignated place for raising game animals
- Gang-gang cockatooSpecies of bird
- GannetGenus of diving seabirds
- GarFamily of fishes
- GarrulaxGarrulax is a genus of passerine birds in the laughingthrush family Leiothrichidae.
- GarrulusGenus of birds
- GarudimimusGarudimimus (meaning "Garuda mimic") is a genus of ornithomimosaur that lived in Asia duri
- GasosaurusGasosaurus () is a genus of tetanuran theropod that lived approximately 171.6 to 161.2 mil
- Gasterophilus intestinalisSpecies of fly
- GasterosteoideiSuborder of ray-finned fishes
- GastornisExtinct genus of birds
- GastrolithRock held inside the intestinal tract
- Gastropod shellPart of the body of a gastropod or snail
- GastrotrichPhylum of microscopic animals
- GavialisGavialis is a genus of crocodylians that includes the living gharial Gavialis gangeticus a
- GaviiformesOrder of birds
- Gecarcinus ruricolaGecarcinus ruricola is a species of terrestrial crab. It is the most terrestrial of the Ca
- GeikiidaeGeikiidae is a family of Late Permian dicynodonts. Fossils are known from Scotland, South
- GekkonidaeFamily of lizards
- GeladaSpecies of Old World monkey
- GelastocorisGelastocoris is a genus of toad bugs in the family Gelastocoridae. There are more than 20
- Gelatinous zooplanktonFragile and often translucent animals that live in the water column
- GelochelidonGenus of birds
- GemsbokSpecies of mammal
- GenasauriaGenasauria is a clade of extinct beaked, primarily herbivorous dinosaurs. Paleontologist P
- Genet (animal)Genus of carnivorans
- Genetically modified insectInsect that has been genetically modified
- Geococcus coffeaeSpecies of true bug
- GeoduckSpecies of bivalve
- Geoffroy's spider monkeySpecies of primate from Central America
- GeokichlaGenus of birds
- GeolycosaGeolycosa is a genus of wolf spiders first described in 1904.
- GeomaliaSpecies of bird
- GeophapsGenus of birds
- GeoplanidaeGeoplanidae is a family of flatworms known commonly as land planarians or land flatworms.
- George Brown GoodeGeorge Brown Goode (February 13, 1851 – September 6, 1896), was an American ichthyologist
- George Edward DobsonGeorge Edward Dobson FRS FLS FZS (4 September 1848 at Edgeworthstown, County Longford, Ire
- George Perry (naturalist)English naturalist and malacologist
- GeosittaGenus of birds
- GeospizaGenus of birds
- GeospizopsisGenus of birds
- GeotriaGeotria is the only genus in the lamprey family Geotriidae. It has 2 known species: Geotri
- GeotrygonGenus of birds
- GerbillinaeSubfamily of rodents
- GerbilliscusGerbilliscus is a genus of rodent in the subfamily Gerbillinae (gerbils) of the family Mur
- GerenukLong-necked species of antelope
- German cockroachSpecies of cockroach
- German ShepherdGerman breed of dog
- GerrhosauridaeThe Gerrhosauridae are a family of lizards native to Africa and Madagascar. They are close
- GerridaeFamily of true bugs
- GerroideaGerroidea is a superfamily of semiaquatic bugs in the order Hemiptera. There are at least
- GerygoneGenus of birds
- GharialCrocodilian native to the Indian subcontinent
- Ghost crabSubfamily of crustaceans
- Giant anteaterSpecies of mammal
- Giant armadilloSpecies of mammals
- Giant cicadaSpecies of true bug
- Giant clamSpecies of bivalve
- Giant conebillSpecies of bird
- Giant couaThe giant coua (Coua gigas) is a bird species from the coua genus in the cuckoo family tha
- Giant elandSpecies of bovine mammal
- Giant forest hogThe giant forest hog (Hylochoerus meinertzhageni), the only member of its genus (Hylochoer
- Giant Gippsland earthwormSpecies of annelid worm
- Giant ibisSpecies of bird
- Giant isopodGenus of crustaceans
- Giant oarfishSpecies of oceanic ray-finned fish
- Giant otterSpecies of mammal
- Giant otter shrewSpecies of mammal
- Giant Pacific octopusSpecies of cephalopod
- Giant petrelGenus of birds
- Giant pouched ratGenus of rodents
- Giant salamanderFamily of amphibians
- Giant squidDeep-ocean dwelling squid in the family Architeuthidae
- Giant swiftletThe giant swiftlet (Hydrochous gigas), also known as the waterfall swift, is a species of
- Giant wētāGenus of orthopteran insects
- Giant white-eyeSpecies of bird
- Giant wrenThe giant wren (Campylorhynchus chiapensis) is a species of bird in the family Troglodytid
- GibberbirdSpecies of bird
- GiganotosaurusCarcharodontosaurid dinosaur genus from the Cretaceous period
- GigantopithecusExtinct genus of primate
- Gilbert Charles BourneGilbert Charles Bourne FRS (5 July 1861 – 9 March 1933) also known as 'Beja' Bourne, was a
- Gilbert's potorooGilbert's potoroo or ngilkat (Potorous gilbertii) is Australia's most endangered marsupial
- Gilded sapphireThe gilded sapphire (Hylocharis chrysura), also known as the gilded hummingbird, is a spec
- Gill rakerGill rakers in fish are bony or cartilaginous processes that project from the branchial ar
- Gin gangA gin gang, wheelhouse, roundhouse or horse-engine house is a structure built to enclose a
- GinglymodiGinglymodi is a clade of ray-finned fish containing modern-day gars (Lepisosteidae) and th
- Giovanni Domenico NardoGiovanni Domenico Nardo (4 March 1802 – 7 April 1877) was an Italian naturalist from Venic
- Gir National ParkNational park and wildlife sanctuary in India
- Giraffe weevilSpecies of beetle
- GiraffidaeFamily of mammals belonging to even-toed ungulates
- GiraffomorphaGiraffomorpha is a clade of pecoran ruminants containing the superfamilies Palaeomerycoide
- GizzardDigestive organ of some animals
- GlaphyridaeGlaphyridae is a family of beetles, commonly known as bumble bee scarab beetles. There are
- GlareolidaeFamily of birds
- Glass frogFamily of amphibians
- Glass knifefishFamily of fishes
- GlaucisGenus of birds
- GlauconycterisGlauconycteris is a genus of vespertilionid bats found in Africa.
- Glaucous macawSpecies of bird
- Glaucous-blue grosbeakSpecies of bird
- Glaucus (gastropod)Glaucus is a genus of small blue pelagic sea slugs. They are aeolid nudibranchs, ranging i
- Glaucus atlanticusSpecies of mollusc
- Gliding flightMode of flight
- Glittering-bellied emeraldThe glittering-bellied emerald (Chlorostilbon lucidus) is a species of hummingbird in the
- GlobicephalinaeGlobicephalinae is a subfamily of oceanic dolphins that includes the pilot whales (Globice
- Globodera pallidaGlobodera pallida is a species of nematode in the family Heteroderidae. It is well known a
- Globodera rostochiensisGlobodera rostochiensis, commonly known as the golden nematode, golden eelworm or yellow p
- Globodera tabacumGlobodera tabacum, commonly known as a tobacco cyst nematode, is a plant parasitic nematod
- Gloger's ruleEcogeographical rule for endotherms
- GlomeridaGlomerida is an order of pill-millipedes found primarily in the Northern Hemisphere. Also
- Glossina fuscipesSpecies of tsetse fly
- Glossy black cockatooSpecies of cockatoo from Australia
- Glossy swiftletThe glossy swiftlet (Collocalia esculenta) is a species of swift in the family Apodidae. I
- GlypheideaGlypheidea is an infraorder of lobster-like decapod crustaceans, comprising a number of fo
- Glyphis (lichen)Glyphis is a genus of lichen-forming fungi in the family Graphidaceae. The genus has a wid
- GlyptodonGenus of large, heavily armored mammals
- GnatAny of many species of tiny flying insects in the dipterid suborder Nematocera
- GnatcatcherFamily of birds
- GnateaterFamily of birds
- GnathostomulidPhylum of marine invertebrates
- GobiconodonExtinct genus of mammals
- GobihadrosGobihadros is a genus of basal hadrosauroid dinosaur that lived in Asia during the Late Cr
- GobiinaeSubfamily of fishes
- GobipteryxExtinct genus of birds
- Goblin sharkDeep-sea shark
- GodwitGenus of birds
- Golden bowerbirdThe golden bowerbird (Prionodura newtoniana) is a species of bird in the family Ptilonorhy
- Golden Gate Bird AllianceU.S. non-profit organization
- Golden hamsterSpecies of hamster
- Golden jackalSpecies of mammal
- Golden moleMonotypic family of mammals
- Golden parakeetSpecies of bird
- Golden pheasantSpecies of bird
- Golden pipitThe golden pipit (Tmetothylacus tenellus) is a distinctive pipit of dry country grassland,
- Golden RetrieverScottish breed of dog
- Golden white-eyeBird in the white-eye family
- Golden-breasted fulvettaSpecies of songbird
- Golden-collared macawSpecies of bird
- Golden-crowned sparrowSpecies of bird
- Golden-crowned warblerThe golden-crowned warbler (Basileuterus culicivorus) is a small New World warbler.
- Golden-fronted leafbirdThe golden-fronted leafbird (Chloropsis aurifrons) is a species of leafbird. It is found f
- Golden-headed cisticolaThe golden-headed cisticola (Cisticola exilis), also known as the bright-capped cisticola,
- Golden-headed lion tamarinThe golden-headed lion tamarin (Leontopithecus chrysomelas), also the golden-headed tamari
- Golden-plumed parakeetSpecies of bird
- Golden-rumped sengiThe golden-rumped sengi (Rhynchocyon chrysopygus) is a small African mammal. It is the lar
- Golden-tailed sapphireThe golden-tailed sapphire (Chrysuronia oenone) is a species of hummingbird in the family
- Golden-tailed woodpeckerThe golden-tailed woodpecker (Campethera abingoni) is a species of bird in the family Pici
- Golden-winged grosbeakGenus of birds
- Golden-winged sunbirdSpecies of bird
- Goldeneye (duck)Bucephala is a genus of diving ducks found in the Northern Hemisphere.
- GoldenfaceSpecies of bird
- GoldenthroatGenus of birds
- GolfingiidaGolfingiida, also known as the Golfingiiformes, is an order of peanut worms. The tentacles
- GolfingiidaeGolfingiidae is a family of peanut worms.
- Goliath birdeaterSpecies of tarantula from South America
- Goliath frogSpecies of amphibian
- GoliathusGenus of beetles
- Goliathus regiusGoliathus regius, the Royal Goliath beetle, is a species of beetles of the family Scarabae
- GomphothereExtinct family of proboscidean mammals
- GomphotheriumGomphotherium (; "nail beast" for its double set of straight tusks) is an extinct genus of
- Gondolin CaveSouth African cave system
- GondtheriumGondtherium is a genus of extinct mammaliaform from the Kota Formation in India. It was co
- Gonepteryx rhamniSpecies of butterfly
- Gongylonema neoplasticumSpecies of roundworm
- GonipterusGenus of beetles
- GonorynchiformesOrder of fishes
- GonostomatidaeFamily of fishes
- GoosefishFamily of fishes
- GopherFamily of burrowing rodents
- GoralGenus of mammals
- Gordon G. GallupGordon G. Gallup Jr. (; born 1941) is an American psychologist in the University at Albany
- Gordon SetterThe Gordon Setter is a Scottish large breed of dog, a member of the setter family that als
- Gorgasia preclaraGorgasia preclara, the splendid garden eel or orange-barred garden eel, is a species of ma
- Gorgeted pufflegThe gorgeted puffleg (Eriocnemis isabellae) is a Critically Endangered species of hummingb
- GorgonocephalidaeGorgonocephalidae is a family of basket stars. They have characteristic many-branched arms
- GorgonopsExtinct genus of therapsids
- GorgonopsiaExtinct group of saber-toothed therapsids from the Permian
- GorsachiusGorsachius is a genus of Old World night herons typically found near water in forested reg
- GorynychusGorynychus is a genus of therocephalian from the mid-Permian from Kotelnich, Russia. The g
- Gough finchSpecies of bird
- Gould's wattled batGould's wattled bat (Chalinolobus gouldii) is a species of Australian wattled bat named af
- Gouldian finchPasserine bird native to Australia
- GouramiFamily of fishes
- Governing Council of the Cat FancyThe Governing Council of the Cat Fancy (GCCF) is a cat registry, established in 1910 and t
- GoyocephaleGoyocephale is an extinct genus of pachycephalosaurian ornithischian that lived in Mongoli
- Graceanna LewisAmerican naturalist and illustrator
- GraciliceratopsGraciliceratops (meaning "slender horn") is a genus of neoceratopsian dinosaurs that lived
- GracilineustesGracilineustes is an extinct genus of marine crocodyliform that lived in the oceans during
- GraculaGenus of birds
- GracupicaGenus of birds
- GraecopithecusExtinct genus of hominids
- GrallariaGenus of birds
- GrallariculaGenus of birds
- GrallinaGrallina is a genus of passerine bird native to Australia and New Guinea. It is a member o
- GrammatorcynusGrammatorcynus is a genus of ray-finned bony fish in the family Scombridae. This genus tog
- GrammomysGrammomys is a genus of rodent in the family Muridae endemic to Africa. It contains the fo
- GrandalaGenus of birds
- Grant's gazelleSpecies of mammal
- GrapsidaeThe Grapsidae are a family of crabs known variously as marsh crabs, shore crabs, or talon
- Grapsus grapsusSpecies of crab
- GraptoliteSubclass of Pterobranchs in the phylum Hemichordata
- Grass carpSpecies of fish
- Grass snakeSpecies of snake
- Grass wrenThe grass wren (Cistothorus platensis) is a species of passerine bird in the family Troglo
- Grass-green tanagerSpecies of bird
- Grasshopper Glacier (Montana)Grasshopper Glacier is in the Beartooth Mountains, Custer National Forest, Montana, U.S. T
- GrasswrenGenus of birds
- Gray catbirdSpecies of bird
- Gray foxSpecies of canid
- Gray whaleBaleen whale that is the sole living member of Eschrichtius
- Grazing (behaviour)Method of feeding in herbivores, eating grasses and other plants
- Great albatrossGenus of birds
- Great argusSpecies of pheasant
- Great aukExtinct flightless seabird from the North Atlantic
- Great black hawkThe great black hawk (Buteogallus urubitinga) is a bird of prey in the family Accipitridae
- Great bowerbirdThe great bowerbird (Chlamydera nuchalis) is a common and conspicuous resident of northern
- Great bustardSpecies of bird
- Great flying foxSpecies of mammal
- Great gerbilThe great gerbil (Rhombomys opimus) is a large rodent found throughout much of Central Asi
- Great green macawSpecies of bird
- Great horned owlSpecies of owl
- Great jacamarSpecies of bird
- Great spotted cuckooThe great spotted cuckoo (Clamator glandarius) is a member of the cuckoo order of birds, t
- Great spotted woodpeckerSpecies of bird
- Great stone-curlewSpecies of bird
- Great swallow-tailed swiftThe great swallow-tailed swift (Panyptila sanctihieronymi) is a species of bird in subfami
- Great-winged petrelThe great-winged petrel (Pterodroma macroptera) is a petrel living and breeding in the wor
- Greater bilbySpecies of marsupial
- Greater blind mole-ratThe greater blind mole-rat (Spalax microphthalmus) is a species of rodent in the family Sp
- Greater blue-eared starlingThe greater blue-eared starling or greater blue-eared glossy-starling (Lamprotornis chalyb
- Greater blue-ringed octopusThe greater blue-ringed octopus (Hapalochlaena lunulata) is one of four species of extreme
- Greater bulldog batSpecies of mammal
- Greater fairy armadilloThe greater fairy armadillo (Calyptophractus retusus), also known as Burmeister's armadill
- Greater flamingoSpecies of bird
- Greater grisonThe greater grison (Galictis vittata) is a species of mustelid native to Southern Mexico,
- Greater hoopoe-larkThe greater hoopoe-lark (Alaemon alaudipes) is a passerine bird which is a breeding reside
- Greater kuduSpecies of woodland antelope
- Greater lophorinaSpecies of bird
- Greater mouse-eared batSpecies of bat
- Greater painted-snipeSpecies of bird
- Greater short-nosed fruit batSpecies of bat
- Greater striped swallowThe greater striped swallow (Cecropis cucullata) is a large swallow that is native to Afri
- Greater vasa parrotSpecies of bird
- GrebeOrder of birds
- Green anacondaSpecies of snake
- Green broadbillThe green broadbill (Calyptomena viridis) also known as the lesser green broadbill is a sm
- Green catbirdThe green catbird (Ailuroedus crassirostris) is a species of bowerbird found in subtropica
- Green cochoaThe green cochoa (Cochoa viridis) is a bird species that was variously placed with the thr
- Green honeycreeperSpecies of bird
- Green junglefowlThe green junglefowl (Gallus varius), also known as Javan junglefowl, forktail or green Ja
- Green monkeyThe green monkey (Chlorocebus sabaeus), also known as the sabaeus monkey, is an Old World
- Green parakeetSpecies of bird
- Green peafowlSpecies of bird
- Green pheasantSpecies of bird
- Green pigeonGenus of birds
- Green sea turtleSpecies of large sea reptile
- Green toucanetsGenus of birds
- Green wood hoopoeThe green wood hoopoe (Phoeniculus purpureus) is a large, up to 44 cm (17 in) long tropica
- Green-backed camaropteraThe green-backed camaroptera (Camaroptera brachyura), also known as the bleating camaropte
- Green-backed kingfisherThe green-backed kingfisher (Actenoides monachus) is a species of bird in the family Alced
- Green-bearded helmetcrestThe green-bearded helmetcrest (Oxypogon guerinii) is a species of hummingbird in the "coqu
- Green-crowned brilliantThe green-crowned brilliant (Heliodoxa jacula) is species of hummingbird in the "brilliant
- Green-head antThe green-head ant (Rhytidoponera metallica) is a species of ant that is endemic to Austra
- Green-tailed goldenthroatThe green-tailed goldenthroat (Polytmus theresiae) is a species of hummingbird in the subf
- Green-tailed jacamarThe green-tailed jacamar (Galbula galbula) is a species of bird in the family Galbulidae.
- Green-throated mangoThe green-throated mango (Anthracothorax viridigula) is a species of hummingbird in the su
- GreenfinchGenus of birds
- Greenhouse whiteflyTrialeurodes vaporariorum, commonly known as the glasshouse whitefly or greenhouse whitefl
- Greenland sharkSpecies of shark
- GreenlandianFirst age of the Holocene epoch
- Greg J. HarrisonAmerican veterinarian
- Gregory, QueenslandGregory (formerly Gregory Downs) is an outback town and locality in the Shire of Burke, Qu
- Grenadiers (fish)Subfamily of fishes
- Grévy's zebraSpecies of zebra
- Grey butcherbirdSpecies of bird
- Grey crowned craneSpecies of bird in the family Gruidae
- Grey currawongThe grey currawong (Strepera versicolor) is a large passerine bird native to southern Aust
- Grey falconSpecies of bird
- Grey fantailThe grey fantail (Rhipidura albiscapa) is a small insectivorous bird. There is no sexual d
- Grey francolinThe grey francolin (Ortygornis pondicerianus) is a species of francolin found in the plain
- Grey go-away-birdSpecies of bird
- Grey hypocoliusSpecies of bird
- Grey junglefowlSpecies of bird
- Grey long-eared batThe grey long-eared bat (Plecotus austriacus) is a fairly large European bat. It has disti
- Grey parrotSpecies of bird
- Grey partridgeSpecies of bird
- Grey penduline titThe grey penduline tit (Anthoscopus caroli), also known as the African penduline-tit, is a
- Grey sealSpecies of pinniped
- Grey-backed camaropteraThe grey-backed camaroptera (Camaroptera brevicaudata) is a small bird in the family Cisti
- Grey-backed storm petrelSpecies of bird
- Grey-capped warblerSpecies of bird
- Grey-faced sengiThe grey-faced sengi (Rhynchocyon udzungwensis) is a species of elephant shrew that is end
- Grey-green scrubwrenThe grey-green scrubwren (Aethomyias arfakianus) is a species of bird in the family Acanth
- Grey-headed bristlebillThe grey-headed bristlebill (Bleda canicapillus) is a species of songbird in the bulbul fa
- Grey-headed gullSpecies of bird
- Grey-headed lovebirdSpecies of bird
- Grey-hooded bush tanagerSpecies of bird
- Grey-legged tinamouThe grey-legged tinamou (Crypturellus duidae), alternatively, the gray-legged tinamou, is
- GreyhoundDog breed
- Greylag gooseSpecies of bird
- GriphodonGriphodon is an extinct genus of mammals, belonging to the order Pyrotheria. It lived duri
- Grizzly bearSubspecies of brown bear
- Groove-billed aniSpecies of bird
- GrosbeakForm taxon of passerine birds
- Ground beetleFamily of beetles
- Ground hornbillGenus of birds
- Ground parrotSpecies of bird
- Ground rollerFamily of birds
- Ground slothDiverse group of extinct sloth species
- Ground squirrelType of ground-dwelling rodent
- Ground titSpecies of bird
- Ground tyrantGenus of birds
- GroundhogSpecies of rodent
- Groundscraper thrushSpecies of bird (Turdus litsitsirupa)
- Grus (bird)Genus of birds
- GryllidaeFamily of crickets
- GryllinaeSubfamily of crickets
- GrylloblattaGrylloblatta is a genus of insects in the family Grylloblattidae. It contains 15 species,
- GrylloblattidaeFamily of insects
- GrylloideaSuperfamily of cricket-like animals
- Gryllus campestrisGryllus campestris, the European field cricket or simply the field cricket in the British
- Gryllus rubensGryllus rubens, commonly known as the southeastern field cricket, is one of many cricket s
- GryphocaGryphoca is an extinct genus of earless seals from Neogene marine deposits in the North Se
- GuadalupianSecond series and epoch of the Permian
- GuaiaberoGenus of birds
- Guam flying foxExtinct species of bat
- Guam kingfisherSpecies of bird from Guam
- Guan (bird)Subfamily of birds
- Guandu Nature ParkGuandu Nature Park, also known as Kuantu Nature Park, (traditional Chinese: 關渡自然公園; simpli
- Guard gooseGoose used as a guard animal
- Guernsey cattleChannel Island breed of cattle
- Guianan warbling antbirdThe Guianan warbling antbird, or Guianan antwarbler, (Hypocnemis cantator) is an insectivo
- Guillaume-Antoine OlivierGuillaume-Antoine Olivier (French pronunciation: ; 19 January 1756, Les Arcs near Toulon –
- GuillemotSpecies of seabird
- Guinean Forests of West AfricaThe Guinean forests of West Africa is a biodiversity hotspot designated by Conservation In
- Guira cuckooSpecies of bird
- GuitarfishFamily of cartilaginous fishes
- Gulf Coast jaguarundiSubspecies of carnivore
- Gull-billed ternSpecies of bird
- GuntheriaGuntheria is a genus of mites in the family Trombiculidae. The species of this genus are f
- Gura TeghiiGura Teghii is a commune in Buzău County, Muntenia, Romania, located in the north-westernm
- Gus (penguin)First emperor penguin found in Australia
- Gustav Jäger (naturalist)German naturalist and hygienist
- Guttural pouchAnatomical feature in some animals
- Guy Ellcock Pilgrim(Henry) Guy Ellcock Pilgrim (Stepney, Barbados, December 24, 1875 – Upton, then in Berkshi
- GymnophthalmidaeGymnophthalmidae is a family of lizards with at least 250 species, sometimes known commonl
- GymnopithysGenus of birds
- GymnotiformesOrder of bony fishes
- GymnureSubfamily of mammals
- GynePrimary reproductive female castes of insects, also known as queens
- GypaetinaeSubfamily of birds
- GyponiniGyponini is a tribe of leafhoppers in the family Cicadellidae, formerly treated as a subfa
- GypsGenus of birds
- GyrfalconSpecies of bird
- GyrininaeGyrininae is a subfamily of ground and water beetles in the family Gyrinidae. There are at
- GyrodactylusGyrodactylus is a genus of parasitic flatworms in the family Gyrodactylidae.