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- Eacles imperialisEacles imperialis, the imperial moth, is a member of the family Saturniidae and subfamily
- Eagle rayFamily of cartilaginous fishes
- Eared doveSpecies of bird
- Eared pheasantEared pheasants are pheasants from the genus Crossoptilon in the family Phasianidae.
- Early CretaceousFirst epoch of the Cretaceous Period
- Early DevonianFirst epoch/series of the Devonian
- Early JurassicFirst epoch of the Jurassic Period
- Early modern humanOld Stone Age ''Homo sapiens''
- Early PleistoceneThe Early Pleistocene is an unofficial sub-epoch in the international geologic timescale i
- Early TriassicFirst of three epochs of the Triassic Period
- East African montane forestsThe East African montane forests is a montane tropical moist forest ecoregion of eastern A
- East African oryxThe East African oryx (Oryx beisa), also known as the beisa, is a species of medium-sized
- East Point, Northern TerritoryEast Point is an inner northern suburb of the city of Darwin, Northern Territory of Austra
- Eastern Arc forestsThe Eastern Arc forests is a montane tropical moist forest ecoregion of eastern Africa. Th
- Eastern barred bandicootSpecies of mammal
- Eastern black rhinocerosThe eastern black rhinoceros (Diceros bicornis michaeli), also known as the East African b
- Eastern bluebonnetSpecies of bird
- Eastern bristlebirdThe eastern bristlebird (Dasyornis brachypterus) is a species of bird in the bristlebird f
- Eastern chipmunkSpecies of mammal
- Eastern cottontailSpecies of rabbit in the genus Sylvilagus
- Eastern crested berrypeckerThe eastern crested berrypecker (Paramythia montium) is a species of bird in the family Pa
- Eastern gorillaSpecies of ape
- Eastern gray squirrelSpecies of squirrel native to North America
- Eastern grey kangarooSpecies of kangaroo
- Eastern grey squirrels in EuropeAmerican eastern grey squirrels acclimated in Europe
- Eastern long-billed larkThe eastern long-billed lark (Certhilauda semitorquata), also known as the Kaffrarian long
- Eastern lowland gorillaSubspecies of ape
- Eastern moleSpecies of mammal
- Eastern newtSpecies of amphibian
- Eastern quollSpecies of marsupial
- Eastern rosellaSpecies of bird
- Eastern shriketitThe eastern shriketit (Falcunculus frontatus) is a species of passerine bird in the family
- Eastern whip-poor-willSpecies of bird
- Eastern wolfSubspecies of canine
- Eastern woodratSpecies of rodent
- Eastern yellowjacketThe eastern yellow jacket or eastern yellowjacket (Vespula maculifrons) is a wasp found in
- Eating live animalsPractice of eating animals that are still alive
- EcdysisShedding of the exoskeleton in arthropods and other invertebrates
- EcdysonePrecursor of an insect hormone
- Ecdysone 20-monooxygenaseEcdysone 20-monooxygenase (EC 1.14.99.22) is an enzyme that catalyzes the chemical reactio
- EcdysozoaSuperphylum of protostomes
- EchimyidaeFamily of rodents
- Echinococcus granulosusSpecies of flatworm
- EchinodonEchinodon is a genus of heterodontosaurid dinosaur that lived during the earliest Cretaceo
- EchinometridaeThe Echinometridae are a family of sea urchins in the class Echinoidea.
- EchinophthiriidaeFamily of lice
- EchinothurioidaOrder of sea urchins
- Echinus (echinoderm)Genus of sea urchins
- EchiodonEchiodon is a genus of pearlfishes, with these currently recognized species:
- EchiuraGroup of marine animals ("spoon worms")
- Echo parakeetSpecies of parrot endemic to Mauritius
- EcitonEciton is a New World army ant genus that contains the most familiar species of army ants.
- Eclipse AwardThe Eclipse Award is an American Thoroughbred horse racing award named after the 18th-cent
- Economic entomologyBranch of entomology
- EctophasiaEctophasia is a genus of flies in the family Tachinidae.
- Ectophasia crassipennisSpecies of fly
- EctopoglossusEctopoglossus is a genus of frogs in the subfamily Hyloxalinae, of the family Dendrobatida
- EctrichodiinaeThe Ectrichodiinae are a subfamily of assassin bugs (Reduviidae) known for specializing on
- EdaphosaurusExtinct genus of synapsids
- Edgar Alexander MearnsEdgar Alexander Mearns (September 11, 1856 – November 1, 1916) was an American surgeon, or
- EdgarosaurusEdgarosaurus is a genus of polycotylid plesiosaur from the Thermopolis Shale, containing o
- Ediacaran biotaLife of the Ediacaran period
- Edible bullfrogThe edible bullfrog (Pyxicephalus edulis), also known as the pixie frog, lesser bullfrog o
- Edith Grace WhiteEdith Grace White (May 16, 1890 – December 1, 1975) was an American zoologist known for he
- Edmonton GroupWithin the earth science of geology, the Edmonton Group is a Late Cretaceous (Campanian st
- EdmontosauriniEdmontosaurini are a tribe of saurolophine hadrosaur dinosaurs that lived in the Northern
- EdmontosaurusHadrosaurid dinosaur genus from Late Cretaceous US and Canada
- EdolisomaGenus of birds
- Edward Burton (zoologist)Edward Burton FRS FLS (1790 – 11 March 1867) was a British Army surgeon and a zoologist. H
- Edward Grey Institute of Field OrnithologyEnglish academic body
- Edward HargittEdward Hargitt (3 May 1835 – 19 March 1895) was a Scottish ornithologist and landscape pai
- Edward Harrison TaylorEdward Harrison Taylor (April 23, 1889 – June 16, 1978) was an American herpetologist from
- Edward J. MiersEdward John Miers FZS FLS (1851– 15 October 1930) was a British zoologist and curator of t
- Edward Shearman RossEdward Shearman Ross (September 1, 1915 – March 16, 2016) was an American entomologist. He
- Edward William NelsonEdward William Nelson (May 8, 1855 – May 19, 1934) was an American naturalist and ethnolog
- Edwards's fig parrotEdwards's fig parrot (Psittaculirostris edwardsii), also known as the scarlet-cheeked fig
- Edwin AshbyEdwin Ashby (2 November 1861 – 8 January 1941) was an Adelaide based Australian property d
- Edwin Nicholas ArnoldEdwin Nicholas Arnold (16 October 1940 – 23 September 2023) was a British herpetologist an
- EffigiaExtinct genus of Archosaurs
- EfraasiaEfraasia (pronounced "E-FRAHS-ee-A") is a genus of basal sauropodomorph dinosaur. It was a
- Egg incubationProcess by which certain egg-laying animals hatch their eggs
- EggshellProtective exterior of an egg
- EgretType of bird of the heron family
- EgrettaGenus of birds
- Egyptian mongooseSpecies of mongoose from Africa and the Mediterranean
- Egyptian ploverSpecies of bird
- Egyptian slit-faced batThe Egyptian slit-faced bat (Nycteris thebaica) is a species of slit-faced bat broadly dis
- Egyptian vultureSpecies of Old World vultures of the genus Neophron
- EiderGenus of birds
- Eigenmannia virescensEigenmannia virescens is a weakly electric freshwater fish found across South America. It
- EilenodontinaeEilenodontinae are an extinct clade of reptiles belonging to Sphenodontia. They are either
- ElacatinusGenus of fishes
- ElaeniaGenus of birds
- ElaninaeSubfamily of birds
- ElanusGenus of birds-of-prey
- Elaphrus viridisSpecies of beetle
- ElaphurusElaphurus is a genus of deer. E.davidianus is the only extant species and several fossil s
- ElapidaeFamily of venomous snakes
- ElasipodidaElasipodida is an order of sea cucumbers. They have numerous appendages, including conical
- ElasmobranchiiSubclass of fishes
- ElasmosaurusGenus of reptiles (fossil)
- ElasmotheriumGenus of extinct rhinoceroses
- ElateriformiaElateriformia is an infraorder of polyphagan beetles. The two largest families in this gro
- Eld's deerSpecies of mammal found in Asia
- EldeceeonEldeceeon is an extinct genus of reptiliomorph from the Mississippian (early Carboniferous
- EldoniaExtinct genus of soft-bodied animals
- Electric antSpecies of ant
- EleoscytalopusEleoscytalopus is a genus of tapaculos found in lowland Atlantic forest of eastern Brazil.
- Elephant birdExtinct order of birds
- Elephant cognitionIntelligence and awareness in elephants
- Elephant crushingMethod of taming wild elephants
- Elephant endotheliotropic herpesvirusSpecies of virus
- Elephant sealGenus of aquatic carnivores
- ElephantidaeFamily of mammals
- ElephantimorphaClade of mammals
- ElephasGenus of mammals
- Elephas hysudricusElephas hysudricus is an extinct elephant species known from the Pleistocene of Asia. It i
- Elephas planifronsElephas planifrons is an extinct species of elephant, known from the Late Pliocene-Early P
- ElessaurusElessaurus is an extinct genus of archosauromorph from the Early Triassic of Brazil. It co
- EllychniaGenus of beetles
- Ellychnia corruscaEllychnia corrusca, the winter firefly, is a species of firefly in the genus Ellychnia. It
- Elm leaf beetleSpecies of beetle
- Elmer S. RiggsElmer Samuel Riggs (January 23, 1869 – March 25, 1963) was an American paleontologist know
- ElmidaeElmidae, commonly known as riffle beetles, is a family of beetles in the superfamily Byrrh
- ElminaeElminae is a subfamily of riffle beetles in the family Elmidae. There are at least 120 gen
- ElmisaurusElmisaurus (meaning "foot sole lizard") is an extinct genus of caenagnathid dinosaur from
- ElpistostegaliaElpistostegalia is a clade containing Panderichthys and all more derived tetrapodomorph ta
- Elysia chloroticaElysia chlorotica (common name the eastern emerald elysia) is a small-to-medium-sized spec
- EmballonuraEmballonura (meaning: Erect tail) is a genus of sac-winged bats in the family Emballonurid
- EmballonuridaeFamily of bats
- EmberizaGenus of birds
- EmberizoideaSuperfamily of passerine birds
- EmberizoidesGenus of birds
- EmbernagraGenus of birds
- EmbiidaeEmbiidae is a family of webspinners in the order Embioptera. There are more than 20 genera
- EmbiopteraOrder of insects
- EmbolomeriEmbolomeri is an order of tetrapods or stem-tetrapods, possibly members of Reptiliomorpha.
- EmbrithopodaEmbrithopoda ("heavy-footed") is an order of extinct mammals known from Asia, Africa and E
- EmbrithosaurusEmbrithosaurus was a pareiasaur from the Permian of South Africa.
- Embryo fossilEmbryo fossils are the preserved remains of unhatched or unborn organisms. Many fossils of
- Emden gooseThe Emden or Embden is a German breed of domestic goose. It is named for the town of Emden
- Emei Shan liocichlaThe Emei Shan liocichla (Liocichla omeiensis), also known as the Omei Shan or grey-faced l
- Emerald ash borerSpecies of beetle
- Émile BlanchardCharles Émile Blanchard (6 March 1819 – 11 February 1900) was a French zoologist and entom
- Emin's pouched ratEmin's pouched rat (Cricetomys emini), also known as the African pouched rat, is a large r
- Emotion in animalsEmotion is defined as any mental experience with high intensity and high hedonic content.
- Emotional support animalAnimal that provides psychological relief
- EmpeirodytesEmpeirodytes is an extinct genus of Plotopteridae, a family of large flightless bird known
- Emperor angelfishSpecies of fish
- Emperor dragonflySpecies of dragonfly
- Emperor penguinLarge flightless seabird endemic to Antarctica
- Emperor scorpionSpecies of scorpion
- EmpidonaxGenus of birds
- Empusa pennataEmpusa pennata, or the conehead mantis, is a species of praying mantis in genus Empusa nat
- EmpusidaeFamily of praying mantises
- Emu War1932 Australian nuisance wildlife management campaign
- Emu-wrenGenus of birds
- EmydocephalusEmydocephalus is a genus of sea snakes, also known as turtle-headed sea snakes, in the fam
- EnaliosuchusEnaliosuchus is a dubious genus of extinct marine crocodyliform within the family Metriorh
- EnantiornisExtinct genus of dinosaurs
- EnantiornithesExtinct clade of avialan dinosaurs
- EncarsiaEncarsia is a large genus of minute parasitic wasps of the family Aphelinidae. The genus i
- Encarsia formosaSpecies of wasp
- Encarsia perplexaEncarsia perplexa is a tiny parasitic wasp, a parasitoid of the citrus blackfly, Aleurocan
- EnchytraeidaeEnchytraeidae is a family of microdrile oligochaetes. They resemble small earthworms and i
- EncyrtidaeFamily of wasps
- Endangered species (IUCN status)Species categorized as likely to become extinct
- EndlingLast known individual of a species or subspecies
- English LopBreed of rabbit
- English Water SpanielThe English Water Spaniel is a breed of dog that has been extinct since the first part of
- EnicognathusEnicognathus is a genus of South American parrots in the family Psittacidae.
- EnoplaEnopla is one of the classes of the worm phylum Nemertea, characterized by the presence of
- EnopleaClass of roundworms
- EnopliaThe Enoplia are a subclass of nematodes in the class Enoplea.
- EnoplidaEnoplida is an order of nematodes. It is one of two orders in Enoplia, which is one of two
- Enoplognatha ovataEnoplognatha ovata, the common candy-striped spider, is a species of spider belonging to t
- Enoplometopus antillensisEnoplometopus antillensis (commonly dwarf reef lobster, Atlantic reef lobster or flaming r
- EnsiferaSuborder of cricket-like animals
- EnsisGenus of bivalves
- EntelodontidaeExtinct family of ungulates
- EnthemonaeThe Enthemonae is a suborder of sea anemones in the order Actiniaria. It comprises those s
- EntiminaeThe Entiminae are a large subfamily in the weevil family Curculionidae, containing most of
- Entomological Society of AmericaScientific society in the United States
- Entomological warfareMethod of biological warfare
- EntomophagyPractice of eating insects by organisms
- Entomophagy in humansPractice of eating insects in human cultures
- EntomotoxicologyIn forensic entomology, entomotoxicology is the analysis of toxins in arthropods (mainly f
- EntoproctaPhylum of aquatic invertebrates
- Environmental issues in LiberiaEnvironmental issues in Liberia include the deforestation of tropical rainforest, the hunt
- EnypniastesGenus of sea cucumbers
- EocaseaEocasea is an extinct genus of caseid synapsids from the Late Pennsylvanian of Kansas. It
- EoconfuciusornisEoconfuciusornis a genus of extinct avialan that lived 131 Ma ago, in the Early Cretaceous
- EodelphisEodelphis, from eo- (dawn) and [Di]delphis (a genus of Opossum), thus meaning "dawn opossu
- EoenantiornisEoenantiornis is a genus of enantiornithean birds which lived during the early Cretaceous
- EohippusExtinct genus of primitive horse
- EohyosaurusEohyosaurus is an extinct genus of basal rhynchosaur known from the early Middle Triassic
- EolipotesEolipotes is an extinct genus of marine river dolphin of the family Lipotidae. It is the o
- EomaiaExtinct genus of mammals
- EomeropidaeEomeropidae is a family of aberrant, flattened scorpionflies represented today by only a s
- EopteranodonEopteranodon (meaning "dawn Pteranodon (toothless wing)") is a genus of tapejarid pterosau
- EoraptorExtinct genus of dinosaurs
- EosentomonEosentomon is a genus of proturans in the family Eosentomidae.
- EotetrapodiformesEotetrapodiformes is a clade of tetrapodomorphs including the four-limbed vertebrates ("te
- EotrachodonEotrachodon orientalis (meaning "dawn Trachodon from the east") is a species of hadrosauri
- EoviscacciaEoviscaccia is an extinct genus of chinchillid rodent that lived during the Early Oligocen
- EpibiontAn epibiont (from the Ancient Greek meaning "living on top of") is an organism that lives
- EpicautaEpicauta is a genus of beetles in the blister beetle family, Meloidae. The genus was first
- Epicauta vittataSpecies of beetle
- EpichirostenotesEpichirostenotes (meaning "above Chirostenotes", because it lived after the latter genus)
- EpimachusGenus of birds
- EpiophlebiaGenus of dragonflies
- Epiophlebia laidlawiEpiophlebia laidlawi, the Himalayan relict dragonfly, is one of four species of Epiprocta
- Epiophlebia superstesEpiophlebia superstes, the Japanese relict dragonfly, is one of the four species of the ge
- EpipedobatesEpipedobates is a genus of poison dart frogs native to northern South America (Colombia an
- EpiphloeinaeEpiphloeinae is a subfamily of checkered beetles in the family Cleridae. There are about 5
- EpiponiniThe Epiponini (formerly known as Polybiini) are a large and diverse tribe of social wasps
- EpitokySexual maturation process in marine worms
- Epizootic hemorrhagic diseaseViral disease of ungulates, especially deer
- Epping Forest National ParkEpping Forest is a national park in Queensland, Australia, 855 km northwest of Brisbane. T
- EptalofosuchusEptalofosuchus is a genus of Notosuchian from the Uberaba Formation in Brazil, and contain
- EptesiciniEptescini is a tribe of bats in the family Vespertilionidae. This tribe has a cosmopolitan
- EptesicusEptesicus is a genus of bats, commonly called house bats or serotine bats, in the family V
- EpthianuraGenus of birds
- EquinaeSubfamily of mammals
- Equus (genus)Genus of mammals that includes horses, asses, and zebras
- ErebidaeFamily of moths
- ErectopusErectopus (meaning "upright foot") is an extinct genus of basal allosauroid theropod from
- EremomelaGenus of birds
- Eremophila (bird)Genus of birds
- EremopterixGenus of birds
- Ergilin Dzo FormationThe Ergilin Dzo Formation (formerly known as the Ardyn Obo Formation), is a geologic forma
- Erich WasmannErich Wasmann SJ (29 May 1859 in Merano − 27 February 1931 in Valkenburg, Netherlands) was
- ErinaceidaeFamily of mammals
- ErinaceusGenus of mammals
- EriocnemisGenus of birds
- EriococcidaeEriococcidae is a family of scale insects in the order Hemiptera. They are commonly known
- EriophyoideaEriophyoidea are a superfamily of herbivorous mites. All post-embryonic instars lack the t
- ErnobiinaeErnobiinae is a subfamily of death-watch and spider beetles in the family Ptinidae. There
- ErpetonyxErpetonyx is an extinct genus of bolosaurian parareptile from the Gzhelian stage of the Ca
- ErrantiaSubclass of annelid worms
- Erwin StresemannErwin Friedrich Theodor Stresemann (22 November 1889, in Dresden – 20 November 1972, in Ea
- ErythrocercusGenus of birds
- ErythrogenysGenus of birds
- ErythropittaGenus of birds
- ErythrotheriumErythrotherium (meaning "red beast") is an extinct genus of basal mammaliaforms from the L
- ErythrotriorchisErythrotriorchis is a genus of bird of prey in the family Accipitridae.
- EsacusGenus of birds
- EschrichtiidaeFamily of mammals
- EsoxGenus of fishes
- EstrildaGenus of finch in the Estrildidae family
- EstrildidaeFamily of birds
- Ethiopian wolfCanine native to Ethiopian Highlands
- EthnoornithologyEthnoornithology (also ethno-ornithology) is the study of the relationship between people
- EthnozoologyStudy of human and animal interaction
- Etruscan shrewSpecies of mammal
- Euaresta aequalisEuaresta aequalis is a species of fruit fly in the genus Euaresta of the family Tephritida
- EublepharisGenus of reptiles
- Eublepharis angramainyuEublepharis angramainyu, also known as the Iranian fat-tailed gecko or Iraqi eyelid gecko,
- EubuccoGenus of birds
- EuceraGenus of bees
- EucestodaSubclass of flatworms
- Eucidaris tribuloidesSpecies of echinoderm
- EucynodontiaClade of cynodonts
- EudercesGenus of beetles
- EudibamusEudibamus is an extinct genus of biped bolosaurid reptile known from the Free State of Thu
- EudocimusGenus of birds
- EudromiaGenus of birds
- EudyptulaGenus of birds
- Eugène SimonEugène Louis Simon (French pronunciation: ; 30 April 1848 – 17 November 1924) was a French
- EuglossiniThe tribe Euglossini, in the subfamily Apinae, commonly known as orchid bees or euglossine
- EuharamiyidaExtinct clade of mammaliaforms
- EulampisGenus of birds
- EuleptorhamphusEuleptorhamphus is a genus of halfbeaks (family Hemiramphidae) in the order Beloniformes.
- EulipotyphlaOrder of mammals
- EumastacidaeFamily of grasshoppers
- EumastacoideaSuperfamily of grasshoppers
- EumetazoaBasal animal clade as a sister group of the Porifera
- EumyiasGenus of birds
- EunicidaEunicida is an order of polychaete worms.
- EunymphicusEunymphicus is a genus of parrots in the family Psittaculidae. The genus is endemic to New
- EuodiceGenus of birds
- EuoplocephalusGenus of ankylosaurid dinosaur from the Late Cretaceous period
- EuparkeriaExtinct genus of reptiles
- EupasserineClade of birds
- EupelycosauriaEupelycosauria is a large clade of animals characterized by the unique shape of their skul
- EuphagusGenus of birds
- EupherusaGenus of birds
- EuphoniaGenus of birds
- EuphoniinaeSubfamily of birds
- Euphrates jerboaThe Euphrates jerboa (Scarturus euphraticus) is a rodent of the family Dipodidae and genus
- EuplectesGenus of weaver birds native to Africa
- EupleresEupleres is a genus of two species of mongoose-like euplerid mammal native to Madagascar t
- EupleridaeFamily of carnivores
- EupnoiThe Eupnoi are a suborder of harvestmen, with more than 200 genera, and about 1,700 descri
- EupodophisEupodophis is an extinct genus of snake from the Late Cretaceous period. It has two small
- Euprenolepis proceraEuprenolepis procera is a species of ant found in the rainforests of South East Asia. It w
- EupsittulaGenus of birds
- Eupsittula canicularisEupsittula canicularis, also known as the orange-fronted parakeet, orange-fronted conure,
- Eurasian beaverSpecies of beaver
- Eurasian brown bearSubspecies of carnivore
- Eurasian chaffinchSpecies of bird
- Eurasian collared doveSpecies of bird
- Eurasian cootSpecies of bird
- Eurasian crag martinThe Eurasian crag martin or just crag martin (Ptyonoprogne rupestris) is a small passerine
- Eurasian goshawkSpecies of bird
- Eurasian hobbySpecies of bird
- Eurasian jayThe Eurasian jay (Garrulus glandarius) is a species of passerine bird in the crow family C
- Eurasian lynxSpecies of medium-sized cat native to Eurasia
- Eurasian otterSpecies of carnivore
- Eurasian oystercatcherSpecies of bird
- Eurasian penduline titThe Eurasian penduline tit or European penduline tit (Remiz pendulinus) is a passerine bir
- Eurasian tree sparrowSpecies of bird
- Eurasian water shrewSpecies of mammal
- EurillasGenus of birds
- Euroleon nostrasEuroleon nostras is a species of antlion found over most of Europe. The scientific name ca
- EuropasaurusExtinct genus of dinosaurs
- European congerSpecies of fish
- European dark beeSubspecies of honey bee
- European edible dormouseSpecies of rodent
- European eelSpecies of fish
- European fallow deerSpecies of hooved mammal
- European hareLarge species of hare native to Europe and parts of Asia
- European hedgehogSpecies of small spiny mammal
- European herring gullSpecies of bird
- European honey buzzardSpecies of bird
- European hornetSpecies of wasp
- European minkSpecies of mammal
- European moleSpecies of mammal
- European nightjarMigratory bird found in Eurasia and Africa
- European paper waspSpecies of wasp
- European perchSpecies of fish
- European pine martenSpecies of mammal in the mustelid family
- European polecatFerret-like mammal species
- European rabbitSpecies of mammal
- European shagSpecies of bird
- European spadefoot toadFamily of amphibians
- European squidThe European squid or common squid (Loligo vulgaris) is a large squid belonging to the fam
- European storm petrelMigratory seabird in the family Hydrobatidae
- European water voleSpecies of rodent
- European wildcatSmall wild cat
- EurostopodusGenus of birds
- Eurygaster integricepsSpecies of true bug
- EuryhalineTerm describing organisms able to adapt to a wide range of salinities
- EurylaimidaeFamily of birds
- EurylaimusGenus of birds
- EurypterinaEurypterina is one of two suborders of eurypterids, an extinct group of chelicerate arthro
- EurypterusExtinct genus of sea scorpions
- EurypygiformesOrder of birds
- EurysquillidaeEurysquillidae is a family of mantis shrimp. Formerly placed in the superfamily Gonodactyl
- EurystomusGenus of birds
- EusthenopteronExtinct genus of tetrapodomorphs
- EutheriaClade of mammals in the subclass Theria
- EutherocephaliaEutherocephalia ("true beast head") is an extinct clade of advanced therocephalian theraps
- EuthyneuraEuthyneura is a taxonomic infraclass of snails and slugs, which includes species exclusive
- Euthyrhynchus floridanusSpecies of true bug
- EutriconodontaExtinct order of mammals
- EutrombiculaEutrombicula is a genus of mites in the family Trombiculidae. The species of this genus ar
- Evening batSpecies of bat
- Everard HomeSir Everard Home, 1st Baronet, FRS (6 May 1756, in Kingston upon Hull – 31 August 1832, in
- Everett C. OlsonEverett Claire Olson (November 6, 1910 – November 27, 1993) was an American zoologist, pal
- Evolution of birdsDerivation of birds from a dinosaur precursor
- Evolution of cetaceansThe evolution of cetaceans is thought to have proceeded in modern day Pakistan during the
- Evolution of fishOrigin and diversification of fish through geologic time
- Evolution of insectsDevelopment of insects from an ancestral crustacean and their subsequent radiation
- Evolution of mammalsThe evolution of mammals has passed through many stages since the first appearance of thei
- Evolution of molluscsThe evolution of the molluscs is the way in which the Mollusca, one of the largest groups
- Evolution of reptilesOrigin and diversification of reptiles through geologic time
- Evolution of spidersOrigin from a chelicerate ancestor and diversification of spiders through geologic time
- Evolution of tetrapodsEvolution of four legged vertebrates and their derivatives
- Evolution of the horseThe evolution of the horse, a mammal of the family Equidae, occurred over a geologic time
- ExaeretodonExtinct genus of cynodonts
- Exocoetus volitansExocoetus volitans, commonly known as the tropical two-wing flyingfish or blue flyingfish,
- ExopterygotaSuperorder of insects
- Exotic petNon-domesticated animal rarely kept as pet
- Exotic ShorthairBreed of cat
- External morphology of LepidopteraExternal features of butterflies and moths
- ExuviaeRemains left by an arthropod molting
