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- Babbling starlingSpecies of bird
- BabirusaGenus of mammals in the swine family
- BachiaBachia is a genus of lizards that belong to the spectacled lizards family.
- Bachman's warblerExtinct bird species
- BactroceraBactrocera is a large genus of tephritid fruit flies, with close to 500 species currently
- Bactrocera carambolaeBactrocera carambolae, also known as the carambola fruit fly, is a fruit fly species in th
- Bactrocera dorsalisSpecies of insect
- Baden Powell (malacologist)Arthur William Baden Powell CBE (4 April 1901 – 1 July 1987) was a New Zealand malacologis
- BadgerShort-legged omnivore
- Baer's pochardSpecies of bird
- BaetoideaSuperfamily of mayflies
- Bagheera (spider)Bagheera is a genus of jumping spiders within the family Salticidae, subfamily Salticinae
- Bagheera kiplingiJumping spider from Central America
- Bagheera prosperBagheera prosper is a species of jumping spiders of the family Salticidae found in the U.S
- Bagobo babblerSpecies of bird
- BaguatheriumBaguatherium is an extinct genus of herbivorous mammal, belonging to the order Pyrotheria.
- Bahama orioleSpecies of songbird
- BaijiSpecies of river dolphin
- Baird's beaked whaleBaird's beaked whale (Berardius bairdii), also known as the northern giant bottlenose whal
- Baird's tapirSpecies of mammal
- BaiyankamysBaiyankamys is a genus of amphibious murid rodents. It was originally described, along wit
- BajocianSecond age of the middle Jurassic
- BalaenidaeFamily of mammals
- BalaenopteraGenus of mammals
- BalaenulaBalaenula is an extinct genus of baleen whale species which lived during the Pliocene epoc
- BalanoglossusGenus of marine worm-like animals
- Balanoglossus gigasBalanoglossus gigas is a species of large free-living enteropneust (acorn worm) found in t
- Balaur bondocExtinct species of dinosaurs
- Bald and Golden Eagle Protection ActUnited States federal statute
- Bald eagleBird of prey species of North America
- Bald IslandBald Island is an island that is located in the Great Southern region of Western Australia
- BalearicaGenus of birds
- BaleenKeratin structure in whales, used for flexible stiffening
- Baleen whaleParvorder of mammal
- Balinese catBreed of cat
- Ball pythonSpecies of constricting snake
- BaltoSiberian Husky and sled dog (1919–1933)
- Bamboo partridgeGenus of birds
- Bamboo ratThe bamboo rats are four species of rodents of the subfamily Rhizomyinae. They are the sol
- Banana slugGenus of molluscs
- BananaquitSpecies of bird
- Banded bullfrogSpecies of frog
- Banded cotingaThe banded cotinga (Cotinga maculata) is a species of bird in the family Cotingidae. It is
- Banded hare-wallabyThe banded hare-wallaby, mernine, or munning (Lagostrophus fasciatus) is a marsupial curre
- Banded kingfisherThe banded kingfisher (Lacedo pulchella) is a tree kingfisher found in lowland tropical fo
- Banded knifefishSpecies of fish
- Banded linsangThe banded linsang (Prionodon linsang) is a linsang, a tree-dwelling carnivorous mammal na
- Banded palm civetSpecies of carnivore
- Banded parisomaThe banded parisoma (Curruca boehmi), banded tit warbler or banded warbler, is a species o
- Banded penguinGenus of birds
- Banded stiltSpecies of Australian bird in the family Recurvirostridae
- BandicootMarsupial endemic to the Australia–New Guinea region
- Banganga TankThe Banganga Tank is a temple tank which is part of the Hindu Walkeshwar Temple complex in
- Banksia attenuataBanksia attenuata, commonly known as the candlestick banksia, slender banksia, or biara to
- BantengSpecies of wild bovine
- BaphetesBaphetes is an extinct genus of stem-tetrapod from the Pennine Coal Measures Group and Par
- BaphetidaeExtinct family of tetrapodomorphs
- BaphetoideaBaphetoidea is a superfamily of stem-tetrapods. It includes the family Baphetidae and seve
- BarasinghaSpecies of deer
- Barbary doveSpecies of bird
- Barbary lionLion population
- Barbary sheepSpecies of wild sheep native to Africa
- BarbastellaBarbastella is a genus of vespertilionid bats. There are seven extant species in this genu
- BarbthroatGenus of birds
- Bare-faced go-away-birdSpecies of bird
- Bark beetleSubfamily of beetles
- Barka indigobirdThe barka indigobird (Vidua larvaticola) is a species of bird in the family Viduidae. It i
- Barn swallowSpecies of bird
- BarnacleSubclass of sessile marine crustaceans
- Barnes's astrapiaBarnes's astrapia, also known as Barnes's long-tailed bird-of-paradise or Barnes's long-ta
- BarramundiSpecies of fish
- Barred owlSpecies of owl
- Barred parakeetSpecies of bird
- Barred puffbirdThe barred puffbird (Nystalus radiatus) is a species of bird in the family Bucconidae, the
- BarreleyeFamily of fishes
- BarwingGenus of birds
- BarylambdaBarylambda (Greek: "heavy" (baros), "lambda" (lambda) in a reference to larger size than t
- BaryonyxGenus of theropod dinosaurs
- Basa (fish)Species of catfish
- BasenjiCentral African breed of dog
- BasileuterusGenus of birds
- Basiliscus (lizard)Genus of lizards
- BasilosaurinaeBasilosaurinae is a subfamily of cetaceans archaeocetes containing two genera: Basilosauru
- BasilosaurusPrehistoric cetacean genus from the Late Eocene epoch
- Basket starSuborder of brittle stars
- Basking sharkSpecies of shark
- BassaricyonGenus of carnivores
- BassetBassets are a sub-type of scenthound deliberately bred with short legs, that are used for
- Basset HoundDog breed
- Bat adenovirus 3Species of virus
- Bat as foodBats as food are eaten by people in some areas of Asia, Africa, Pacific Rim countries, and
- Bat bombExperimental WWII U.S. incendiary weapon
- Bat Conservation InternationalUS-based non-governmental organization
- Bat Conservation TrustBritish charity
- Bat hawkSpecies of bird
- Bat SARS-like coronavirus WIV1Species of virus
- Bat viromeGroup of viruses associated with bats
- Bat wing developmentGrowth of bat forelimbs
- Bat-eared foxSpecies of carnivorous mammal
- BatantaBatanta is one of the four major islands in the Raja Ampat Islands in Southwest Papua prov
- BateleurSpecies of bird
- BathonianThird age of the Middle Jurassic
- BathornithidaeBathornithidae is an extinct family of birds from the Eocene to Miocene of North America.
- Bathyphysa coniferaSpecies of siphonophore sometimes called the flying spaghetti monster
- Bathypterois grallatorSpecies of fish
- BathysuchusBathysuchus ("deep water crocodile") is an extinct genus of teleosaurid thalattosuchian fr
- Batis (bird)Genus of birds
- BatrachognathusBatrachognathus is an extinct genus of anurognathid pterosaur from the Late Jurassic (Oxfo
- BatrachoididaeFamily of ray-finned fishes
- BatrachostomusGenus of birds
- BatrachuperusBatrachuperus is a genus of salamander in the family Hynobiidae found in western China and
- Battery cageAgricultural technology
- Baudet du PoitouFrench breed of donkey
- Baudin's black cockatooSpecies of birds
- BaurusuchidaeExtinct family of reptiles
- Bay duikerThe bay duiker (Cephalophus dorsalis), also known as the black-striped duiker and the blac
- Bay horneroThe bay hornero or pale-billed hornero (Furnarius torridus) is a species of bird in the Fu
- BdelloideaClass of parthenogenetic freshwater rotifers
- Beach stone-curlewSpecies of bird
- BeachcombingLooking for beach collectables
- BeagleBreed of small scent hound
- BeaglingBeagling is mainly the hunting of hares and rabbits by beagles using their strong sense of
- Beaked whaleFamily of mammals
- Bear cuscusThe bear cuscuses are the members of the genus Ailurops. They are marsupials of the family
- Bearded barbetSpecies of bird
- Bearded helmetcrestGenus of birds
- Bearded reedlingSpecies of bird
- Bearded vultureSpecies of bird
- Bearded woodpeckerThe bearded woodpecker (Chloropicus namaquus) is a species of bird in the family Picidae.
- BecardGenus of birds
- Bed bug control techniquesMethods to prevent bed bug infestations
- Bee hummingbirdSmallest species of bird
- Bee-eaterInsectivorous bird species in the family Meropidae
- Beech martenSpecies of carnivore
- BeeswaxNatural wax produced by honey bees of the genus Apis
- Beet leafhopperSpecies of insect
- BeiguornisBeiguornis is a genus of bohaiornithid dinosaurs from the Early Cretaceous Longjiang Forma
- BelemnitidaExtinct, squid-like, Mesozoic cephalopods
- BelemnoideaBelemnoids are an extinct group of marine cephalopod, very similar in many ways to the mod
- BelidaeFamily of beetles
- BelinaeBelinae are a Gondwanan subfamily of beetles which belong to the belids, primitive weevils
- BeloneBelone is a genus of needlefish common in brackish and marine waters mainly found in the e
- BeloniformesOrder of fishes
- BelostomaBelostoma is a genus of insects in the hemipteran family Belostomatidae, known colloquiall
- Belostoma flumineumSpecies of true bug
- BelostomatidaeFamily of true bugs
- Beltsville Small WhiteThe Beltsville Small White is a modern American breed of domestic turkey. It was developed
- Beluga (sturgeon)Species of fish in the sturgeon family
- Beluga whaleSpecies of whale
- BemalambdidaeBemalambdidae is an extinct family of pantodont mammals known from Early and Middle Paleoc
- BemisiaBemisia is a genus of whitefly in the family Aleyrodidae.
- Beneficial insectInsect that is beneficial to humans
- Bengal foxSpecies of carnivore
- Bengal monitorSpecies of lizard
- Bengal tigerTiger population on the Indian subcontinent
- BenggwigwishingasuchusBenggwigwishingasuchus is a genus of poposauroid pseudosuchian from the Anisian Favret For
- Berkshire pigBritish breed of pig
- Berlepsch's tinamouBerlepsch's tinamou (Crypturellus berlepschi) is a type of ground bird found in moist fore
- BernieridaeFamily of birds
- Berserk llama syndromeAggressive behavior disorder in camelids
- BestiaryCompendium of beasts
- BetasuchusBetasuchus is a genus of theropod dinosaur which lived during the Late Cretaceous Period.
- Bewick's wrenSpecies of bird
- BharalSpecies of wild sheep native to the Himalayas
- Biak gliderThe Biak glider (Petaurus biacensis) is a species of marsupial in the family Petauridae. I
- BiarmosuchiaBiarmosuchia is an extinct clade of non-mammalian synapsids from the Permian. Biarmosuchia
- BibionidaeBibionidae (March flies) is a family of flies (Diptera) containing approximately 650–700 s
- BicentenariaBicentenaria (meaning "two hundred year anniversary"; named after the 200th anniversary of
- BichonType of toy dog
- Bichon au citronThe bichon au citron is a French pastry. It is similar to a turnover in size, shape, and t
- Bicolored antbirdThe bicolored antbird (Gymnopithys bicolor) is a species of bird in subfamily Thamnophilin
- Bifurcitus ducalisBifurcitus ducalis, formerly Megadytes ducalis, is a species of water beetle in the family
- Big brown batSpecies of vesper bat
- Big catParaphyletic group of mammals
- Big Five gameAfrican game-hunting species
- Bighead carpSpecies of fish
- Bighorn sheepSpecies of sheep native to North America
- Bile bearBears kept in captivity to harvest their bile
- BillfishGroup of ray-finned fishes
- Binocular visionType of vision
- BinturongAsian mammal also known as a bearcat
- BipaliinaeBipaliinae is a subfamily of land planarians found mainly in Madagascar, the Indian subcon
- BipaliumGenus of flatworms
- Bipalium kewenseBipalium kewense, also known as the shovel-headed garden worm, is a species of large preda
- BipedidaeBipedidae is a family of amphisbaenians that includes the extant genus Bipes represented b
- Bird bathArtificial puddle or small shallow pond where birds bathe
- Bird collectionsBird collections are curated repositories of scientific specimens consisting of birds and
- Bird colonyLarge congregation of birds
- Bird conservationField in the science of conservation biology related to threatened birds
- Bird eggComponent of avian reproduction
- Bird extinctionTypically human-caused eradication of entire avian species
- Bird feederDevice to supply food to birds
- Bird feedingActivity of feeding wild birds
- Bird feet and legsHindlimbs primarily used for the anchoring and locomotion of avians
- Bird flightAerial locomotion in avian dinosaurs
- Bird hybridBird with two different species as parents
- Bird ichnologyBird ichnology is the study of avian life traces in ornithology and paleontology. Such lif
- Bird intelligenceStudy of intelligence in birds
- Bird Island Nature Reserve (South Africa)Bird Island Nature Reserve is a 3-hectare (7.4-acre) nature reserve in Lambert's Bay, Sout
- Bird reserveNaturally occurring sanctuary designed to protect bird species
- Bird ringingAttachment of a tag to a wild bird to enable individual identification
- Bird strikeCollision between a vehicle and a bird
- Bird visionSenses for birds
- Bird–window collisionsProblem in urban areas
- BirdLife AustraliaBirdLife Australia is a not-for-profit organisation advocating for native birds and the co
- Birds of AustraliaBirds native or endemic to Australia
- Birds of South Asia: The Ripley GuideTwo-volume ornithological handbook by Pamela Rasmussen and John Anderton
- Birds of the AmazonAn immense number of bird species live in the Amazon rainforest and river basin (an area w
- BirdwatchingAmateur observation of birds
- BirdwingButterflies in swallowtail family
- BirkeniiformesBirkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to
- BirmanBreed of cat
- BisonGenus of mammals
- Bison schoetensackiBison schoetensacki, commonly as the Pleistocene woodland bison or Pleistocene wood bison,
- Biston (moth)Biston is a genus of large, long-winged moths belonging to the family Geometridae. It is m
- Bithynia tentaculataBithynia tentaculata, common names the mud bithynia or common bithynia, or faucet snail is
- BitingBehaviour of opening and closing the jaw found in many animals
- BitternSubfamily of birds
- BiziuraBiziura is a genus of stiff-tailed ducks endemic to Australasia and containing one living
- BlaberusBlaberus is a genus of cockroaches native to the Neotropics found in the Americas. At leas
- Black and rufous sengiThe black and rufous sengi (Rhynchocyon petersi), the black and rufous elephant shrew, or
- Black bulbulThe black bulbul (Hypsipetes leucocephalus), also known as the Himalayan black bulbul or A
- Black bullheadSpecies of fish
- Black butcherbirdSpecies of bird
- Black caimanLargest extant species of caiman
- Black caracaraThe black caracara (Daptrius ater) is a species of bird of prey in the family Falconidae f
- Black catbirdSpecies of songbird
- Black coucalThe black coucal (Centropus grillii) is a species of cuckoo in the family Cuculidae. It ha
- Black crowned craneSpecies of bird
- Black eagleSpecies of bird
- Black falconThe black falcon (Falco subniger) is a medium-large falcon that is endemic to Australia. I
- Black francolinSpecies of bird
- Black ghost knifefishSpecies of fish
- Black grouseSpecies of bird
- Black guillemotThe black guillemot or tystie (Cepphus grylle) is a medium-sized seabird of the Alcidae fa
- Black honeyeaterSpecies of birds
- Black hornbillSpecies of bird
- Black Iberian pigBreed of pig
- Black kiteSpecies of bird
- Black loryThe black lory (Chalcopsitta atra), is a medium-sized, blackish parrot with black bill, da
- Black mambaSpecies of venomous snake
- Black ratSpecies of rodent
- Black rhinocerosSpecies of mammal
- Black robinPasserine species of bird native to the Chatham Islands
- Black seadevilFamily of fish
- Black Spanish (grape)Black Spanish is a variation of grape that was originally assumed to be a seedling of an A
- Black squirrelMelanistic squirrel
- Black squirrel monkeyThe black squirrel monkey (Saimiri vanzolinii), also known as the blackish squirrel monkey
- Black stiltSpecies of bird
- Black storkSpecies of bird
- Black swallowerSpecies of fish
- Black swanSpecies of waterfowl
- Black turnstoneThe black turnstone (Arenaria melanocephala) is a species of small wading bird. It is one
- Black wheatearThe black wheatear (Oenanthe leucura) is a wheatear, a small passerine bird in the Old Wor
- Black wood pigeonSpecies of bird
- Black-and-rufous warbling finchThe black-and-rufous warbling finch (Poospiza nigrorufa) is a species of bird in the tanag
- Black-and-white warblerSpecies of New World warbler
- Black-and-white-casqued hornbillThe black-and-white-casqued hornbill (Bycanistes subcylindricus) also known as the grey-ch
- Black-backed bush tanagerSpecies of bird
- Black-backed butcherbirdSpecies of bird
- Black-backed jackalSpecies of carnivore
- Black-backed puffbackThe black-backed puffback (Dryoscopus cubla) is a species of passerine bird in the family
- Black-breasted buttonquailSpecies of bird
- Black-breasted buzzardSpecies of bird
- Black-capped donacobiusSpecies of bird
- Black-capped tinamouThe black-capped tinamou (Crypturellus atrocapillus) is a type of tinamou commonly found i
- Black-cheeked lovebirdSpecies of bird
- Black-chested mountain tanagerThe black-chested mountain tanager (Cnemathraupis eximia) is a species of bird in the fami
- Black-collared lovebirdSpecies of bird
- Black-collared starlingThe black-collared starling (Gracupica nigricollis) is a species of starling in the family
- Black-crowned night heronSpecies of bird
- Black-crowned tchagraSpecies of bird
- Black-eared fairyThe black-eared fairy (Heliothryx auritus) is a species of hummingbird in the subfamily Po
- Black-faced spoonbillSpecies of bird
- Black-faced waxbillThe black-faced waxbill (Brunhilda erythronotos) is a common species of estrildid finch fo
- Black-footed catSmall wild cat native to Southern Africa
- Black-footed ferretSpecies of carnivore
- Black-footed gray langurThe black-footed gray langur (Semnopithecus hypoleucos) is an Old World monkey, one of the
- Black-goggled tanagerSpecies of bird
- Black-headed duckSpecies of bird
- Black-headed gullSpecies of bird
- Black-legged seriemaThe black-legged seriema (Chunga burmeisteri) is one of two living species of seriemas in
- Black-naped orioleThe black-naped oriole (Oriolus chinensis) is a passerine bird in the oriole family that i
- Black-necked aracariThe black-necked aracari or black-necked araçari (Pteroglossus aracari) is a near-passerin
- Black-necked stiltSpecies of bird
- Black-necked swanThe black-necked swan (Cygnus melancoryphus) is a species of waterfowl in the tribe Cygnin
- Black-rumped waxbillThe black-rumped waxbill (Estrilda troglodytes) is a common species of estrildid finch fou
- Black-spotted barbetThe black-spotted barbet (Capito niger) is a species of bird in the family Capitonidae, th
- Black-tailed deerSubspecies of deer
- Black-tailed jackrabbitCommon hare of the western United States and Mexico
- Black-tailed prairie dogSpecies of rodent
- Black-tailed trainbearerThe black-tailed trainbearer (Lesbia victoriae) is a species of hummingbird in the family
- Black-thighed pufflegThe black-thighed puffleg (Eriocnemis derbyi) is a species of hummingbird in the "brillian
- Black-throated mangoThe black-throated mango (Anthracothorax nigricollis) is a species in subfamily Polytminae
- Black-throated sparrowSpecies of bird
- BlackbuckAntelope native to India and Nepal
- Blackish-blue seedeaterThe blackish-blue seedeater (Amaurospiza moesta) is a species of bird in the family Cardin
- BlackthroatThe blackthroat (Calliope obscura), also known as the black-throated robin or black-throat
- Blakeney ChapelBlakeney Chapel is a ruined building on the coast of North Norfolk, England. Despite its n
- Blakeney PointNational nature reserve on the north coast of Norfolk, England
- BlancanThe Blancan North American Stage on the geologic timescale is the North American faunal st
- Blanford's foxSpecies of carnivore
- Blasius MerremBlasius Merrem (4 February 1761 – 23 February 1824) was a German naturalist, zoologist, or
- Blastophaga psenesSpecies of wasp
- BlattellinaeBlattellinae is a subfamily of the wood cockroach family, Ectobiidae (formerly "Blattellid
- BlattodeaOrder of insects that includes cockroaches and termites
- BlattoideaBlattoidea is a superfamily of cockroaches and termites in the order Blattodea. There are
- BlennioideiOrder of fishes
- BlephariceridaeThe Blephariceridae, commonly known as net-winged midges, are a nematoceran family in the
- BlephariceromorphaThe Blephariceromorpha are an infraorder of nematoceran flies, including three families as
- BlepharipodidaeBlepharipodidae is a family of sand crabs (Hippoidea), comprising the two genera Blepharip
- BlesmolFamily of rodents
- BlezingeriaBlezingeria is an extinct genus of marine reptile from the Middle Triassic of Germany. The
- Blinders (poultry)Devices fitted to poultry to block their forward vision
- Blister beetleFamily of beetles
- Blond-crested woodpeckerThe blond-crested woodpecker (Celeus flavescens) is a species of bird in the woodpecker fa
- BloodhoundDog breed used for tracking by scent
- Blowhole (anatomy)Hole (or spiracle) at the top of the head
- BlubberThick layer of animal body fat
- Blue dacnisThe blue dacnis or turquoise honeycreeper (Dacnis cayana) is a small passerine bird. This
- Blue duckSpecies of duck endemic to New Zealand
- Blue eared pheasantSpecies of bird
- Blue jewel-babblerThe blue jewel-babbler (Ptilorrhoa caerulescens) is a species of bird in the family Cinclo
- Blue lorikeetSpecies of bird
- Blue manakinThe blue manakin or swallow-tailed manakin (Chiroxiphia caudata) is a small species of bir
- Blue nuthatchSpecies of small passerine bird
- Blue pigeonGenus of birds
- Blue sharkSpecies of shark
- Blue wildebeestSpecies of antelope
- Blue-and-white flycatcherSpecies of bird
- Blue-and-yellow macawSpecies of bird
- Blue-backed manakinThe blue-backed manakin (Chiroxiphia pareola) is a small passerine bird which breeds in tr
- Blue-backed tanagerSpecies of bird
- Blue-black grassquitSpecies of bird
- Blue-capped ifritSpecies of bird
- Blue-cheeked amazonThe blue-cheeked amazon (Amazona dufresniana), also known as blue-cheeked parrot or Dufres
- Blue-chinned sapphireThe blue-chinned sapphire or blue-chinned emerald (Chlorestes notata) is a hummingbird tha
- Blue-crowned hanging parrotThe blue-crowned hanging parrot (Loriculus galgulus) is a parrot species endemic to southe
- Blue-crowned parakeetSpecies of bird
- Blue-eared kingfisherThe blue-eared kingfisher (Alcedo meninting) is found in Asia, ranging across the Indian s
- Blue-eyed cockatooType of cockatoo
- Blue-eyed shagGenus of birds
- Blue-fronted robinSpecies of bird
- Blue-headed quail-doveSpecies of bird
- Blue-naped mousebirdThe blue-naped mousebird (Urocolius macrourus), also formerly called the blue-naped coly (
- Blue-ringed octopusFour species of mollusk
- Blue-throated macawSpecies of bird from Bolivia
- Blue-tongued skinkGenus of lizards
- Blue-winged gooseSpecies of bird
- Blue-winged kookaburraThe blue-winged kookaburra (Dacelo leachii) is a large species of kingfisher native to nor
- Blue-winged macawSpecies of bird
- Blue-winged mountain tanagerThe blue-winged mountain tanager (Anisognathus somptuosus) is a species of bird in the fam
- BluebillGenus of birds
- BluebirdGenus of birds
- Bluefin trevallyThe bluefin trevally (Caranx melampygus), also known as the bluefin jack, bluefin kingfish
- Blyth's kingfisherBlyth's kingfisher (Alcedo hercules) is the largest kingfisher in the genus Alcedo. Named
- BlythipicusGenus of birds
- Boa constrictorSpecies of snake
- Boat-billed heronSpecies of bird
- BobcatMedium-sized North American wild cat
- BobolinkSpecies of bird
- BohaiornithidaeExtinct family of dinosaurs
- BoinaeSubfamily of snakes
- BoissonneauaGenus of birds
- BojophlebiaBojophlebia is an extinct genus of winged insect from the Pennsylvanian period of the Czec
- BokmakierieSpecies of bird
- BolboceratidaeBolboceratidae is a family of beetle. It was historically treated as a subfamily of the ea
- Bold RulerBold Ruler (April 6, 1954 – July 12, 1971) was an American Thoroughbred Hall of Fame raceh
- Boll weevilSpecies of beetle
- BolosauridaeBolosauridae is an extinct family of parareptiles known from the latest Carboniferous (Gzh
- BoltonimeciaBoltonimecia is an extinct genus of ant in the formicid subfamily Zigrasimeciinae. The gen
- Bombardier beetleBeetles that emit a spray when threatened
- Bombay Natural History SocietyIndian conservation and biodiversity research NGO
- BombinatoridaeBombinatoridae is a family of toads found in Eurasia. Species of the family have flattened
- Bombus affinisSpecies of bee
- Bombus pensylvanicusSpecies of bee
- Bombus terrestrisSpecies of bee
- BombycilloideaBombycilloidea is a superfamily of passerine birds that contains ten living species. They
- BombyliidaeFamily of flies
- BombyliinaeBombyliinae is a subfamily of bee flies in the family Bombyliidae. There are more than 70
- BonelliidaeBonelliidae is a family of marine worms (Subclass Echiura, of the class Polychaeta, in the
- Bongo (antelope)Species of mammal
- Bonin grosbeakExtinct species of bird
- Bonin white-eyeSmall songbird endemic to the Bonin Islands of Japan
- BonitoTribe of fishes
- BonnerichthysBonnerichthys is a genus of fossil fishes within the family Pachycormidae that lived durin
- BoobyGenus of birds
- BookbindingProcess of assembling a book
- BoreoeutheriaMagnorder of mammals containing Laurasiatheria and Euarchontoglires
- Bornean bearded pigSpecies of mammal
- Bornean bristleheadSpecies of bird
- Bornean green magpieThe Bornean green magpie (Cissa jefferyi) is a passerine bird in the crow family, Corvidae
- Bornean orangutanSpecies of ape
- Borneo montane rain forestsThe Borneo montane rain forests is an ecoregion on the island of Borneo in Southeast Asia.
- BorophagusExtinct genus of carnivores
- Botanic Gardens Conservation InternationalBotanic Gardens Conservation International (BGCI) is a plant conservation charity based in
- BotaurusGenus of birds
- BothremydidaeBothremydidae is an extinct family of side-necked turtles (Pleurodira) known from the Cret
- BothriolepisDiverse genus of placoderm fishes of the Devonian
- BothropsBothrops is a genus of highly venomous pit vipers endemic to the Neotropics. The generic n
- Botta's pocket gopherBotta's pocket gopher (Thomomys bottae) is a pocket gopher native to western North America
- Bottlenose dolphinGenus of dolphin
- Bou-Hedma National ParkBou-Hedma National Park is located in both the Gafsa Governorate and Sidi Bouzid Governora
- Bougainville bush warblerThe Bougainville bush warbler or odedi (Horornis haddeni) is a bird species initially plac
- Boulder chatSpecies of bird
- Bourbon RedThe Bourbon Red is an American breed of domestic turkey. It is named for its reddish-brown
- Bouri FormationThe Bouri Formation is a sequence of sedimentary deposits that is the source of australopi
- Bourke's parrotSpecies of bird
- BoverisuchusExtinct genus of reptiles
- BovinaeSubfamily of mammals
- BowerbirdFamily of birds
- BowfinSpecies of ray-finned fish
- Bowhead whaleBaleen whale endemic to the Arctic
- Box jellyfishClass of cnidarians distinguished by their cube-shaped medusae
- Brachionus calyciflorusBrachionus calyciflorus is a planktonic rotifer species occurring in freshwater. It is com
- BrachiopodPhylum of marine animals also known as lamp shells
- BrachiosaurusSauropod dinosaur genus from the late Jurassic Period
- BrachyceraSuborder of flies
- BrachyhyopsBrachyhyops is an extinct genus of entelodont artiodactyl mammal that lived during the Eoc
- BrachylophusThe genus Brachylophus consists of four extant iguanid species native to the islands of Fi
- BrachypelmaBrachypelma is a genus of spiders in the family Theraphosidae (tarantulas). They may have
- Brachypelma hamoriiSpecies of arachnid
- Brachypelma smithiBrachypelma smithi is a species of spider in the family Theraphosidae (tarantulas) native
- Brachyponera chinensisSpecies of ant
- BrachyramphusGenus of birds
- BrachythoraciBrachythoraci is an extinct suborder of arthrodire placoderms, armored fish most diverse d
- Bracken CaveCave in Comal County, Texas, US
- Brackish marshBrackish marshes develop from salt marshes where a significant freshwater influx dilutes t
- BradornisGenus of birds
- BradypterusGenus of birds
- Brahminy kiteSpecies of bird
- Brain coralCommon name for various corals
- BramblingSpecies of bird
- Branca (chicken)The Branca is a Portuguese breed of domestic chicken of Naked Neck type. It is found in on
- BranchiobdellidaOrder of annelids
- BranchiopodaClass of crustaceans
- BranchiostomaBranchiostoma is one of the few living genera of lancelets (order Amphioxiformes). It is t
- Branchiostoma lanceolatumSpecies of lancelet
- BrantaGenus of birds
- Brazilian tealSpecies of bird
- Breeding behaviour of birdsBird behaviour related to reproduction and early development
- BrevicoryneBrevicoryne is a genus of aphid insect that contains many species which are agricultural p
- Brevicoryne brassicaeSpecies of true bug
- BridetheriumBridetherium is an extinct genus of morganucodontan from Early Jurassic deposits of southe
- Bridled white-eyeThe bridled white-eye (Zosterops conspicillatus) (Chamorro name: nosa') is a species of wh
- Brimstone mothThe brimstone moth (Opisthograptis luteolata) is a moth of the family Geometridae. The spe
- Brine shrimpGenus of aquatic crustaceans
- BrisingidaThe Brisingids are deep-sea-dwelling starfish in the order Brisingida.
- BrisingidaeFamily of starfishes
- Bristle-thighed curlewThe bristle-thighed curlew (Numenius tahitiensis) is a medium-sized shorebird that breeds
- BristlebillGenus of birds
- BristlebirdFamily of birds
- Bristled grassbirdSpecies of bird
- Bristol ZooZoo in Bristol, United Kingdom
- British National Vegetation ClassificationThe British National Vegetation Classification or NVC is a system of classifying natural h
- Brittle starClass of echinoderms
- Broad Breasted WhiteBreed of turkey
- Broad-billed rollerThe broad-billed roller (Eurystomus glaucurus) is a member of the roller family of birds w
- Broad-tailed paradise whydahThe broad-tailed paradise whydah (Vidua obtusa) is a species of bird in the family Viduida
- Broad-tailed parrotTribe of birds
- Broadnosed pipefishThe broadnosed pipefish or deepnosed pipefish (Syngnathus typhle) is a fish of the family
- BrochocoleusExtinct genus of beetles
- BroilerChicken bred for meat
- BrontornisExtinct genus of birds
- BrontosaurusGenus of diplodocid sauropod dinosaur
- BrontotheriidaeExtinct family of odd-toed ungulates
- Bronze-tailed thornbillThe bronze-tailed thornbill (Chalcostigma heteropogon) is a species of hummingbird in the
- Bronze-winged jacanaSpecies of bird
- Bronzed cowbirdThe bronzed cowbird (Molothrus aeneus), once known as the red-eyed cowbird, is a small ict
- Bronzy incaThe bronzy inca (Coeligena coeligena) is a species of hummingbird in the "brilliants", tri
- Brookesia peyrierasiBrookesia peyrierasi is a species of diminutive chameleon, a lizard in the family Chamaele
- BrotogerisGenus of birds
- BroučciCzech children's book by Jan Karafiát
- Brown boobySpecies of bird
- Brown cacholoteThe brown cacholote (Pseudoseisura lophotes) is a species of bird in the Furnariinae subfa
- Brown dipperThe brown dipper (Cinclus pallasii), also known as Pallas's dipper, Asian dipper or the As
- Brown doveGenus of birds
- Brown goshawkSpecies of bird
- Brown long-eared batSpecies of bat
- Brown marmorated stink bugSpecies of Pentatomid insect
- Brown mouse lemurThe brown mouse lemur (Microcebus rufus) is a small primate, and like the other mouse lemu
- Brown recluse spiderSpecies of spider with venomous bite native to US
- Brown sicklebillThe brown sicklebill (Epimachus meyeri) is a species of bird-of-paradise that is found in
- Brown thornbillThe brown thornbill (Acanthiza pusilla) is a passerine bird usually found in eastern and s
- Brown tinamouThe brown tinamou (Crypturellus obsoletus) is a brownish ground bird found in humid lowlan
- Brown treecreeperThe brown treecreeper (Climacteris picumnus) is the largest Australasian treecreeper. The
- Brown-flanked bush warblerThe brown-flanked bush warbler (Horornis fortipes), also known as the brownish-flanked bus
- Brown-necked parrotThe brown-necked parrot (Poicephalus fuscicollis), sometimes known in aviculture as the un
- Brown-throated sunbirdThe brown-throated sunbird (Anthreptes malacensis), also known as the plain-throated sunbi
- Bruce BagemihlBruce Bagemihl is a Canadian biologist, linguist, and author of the book Biological Exuber
- Brugia malayiSpecies of filarial nematode
- Brunhilda (bird)Genus of birds
- Bruno LemaitreBruno Lemaitre (French pronunciation: ; born September 21, 1965 in Lille, France) is a Fre
- Brush rabbitThe brush rabbit (Sylvilagus bachmani), or western brush rabbit, or Californian brush rabb
- Bubal hartebeestThe bubal hartebeest, also known as northern hartebeest or bubal antelope or simply bubal
- Bubble nestBubble nests, also called foam nests, are created by some fish and frog species as floatin
- Buccinum undatumBuccinum undatum, the common whelk or the waved buccinum, is a large, edible marine gastro
- BuccoGenus of birds
- BucephalusHorse of Alexander the Great
- BucerosGenus of birds
- BucerotiformesOrder of birds
- BucksawA bucksaw is a hand-powered frame saw similar to bow saw and generally used with a sawbuck
- BuddingForm of cellular asexual reproduction
- BuenoaBuenoa is a genus of backswimmer. It was created by George Willis Kirkaldy in 1904 to incl
- Buff-breasted buttonquailSpecies of bird
- Buff-breasted sandpiperSpecies of bird
- Buff-tailed coronetThe buff-tailed coronet (Boissonneaua flavescens) is a species of hummingbird in the "bril
- Buff-winged cinclodesThe buff-winged cinclodes (Cinclodes fuscus) is a species of bird in the Furnariinae subfa
- Buffalo Springs National ReserveBuffalo Springs National Reserve is a protected area in Isiolo County, Kenya.
- Buffalo treehopperSpecies of true bug
- BuffleheadSpecies of bird
- Buffy fish owlThe buffy fish owl (Ketupa ketupu), also known as the Malay fish owl, is a fish owl in the
- Buffy hummingbirdSpecies of bird
- BugGuideDatabase of insects and arthropods and online community
- BulbasaurusExtinct genus of dicynodonts
- BullAdult male cattle
- Bull rayAetomylaeus bovinus, also known as the bull ray, duckbill ray, or duckbill eagle ray, is a
- Bull sharkSpecies of fish
- Bull TerrierDog breed
- BulldogBritish breed of dog
- Bulldog batFamily of bats
- Bullhead sharkGenus of sharks
- BulweriaBulweria is a genus of seabirds in the family Procellariidae named after English naturalis
- Bumblebee communicationCommunication between bumblebees
- BungarusGenus of venomous snakes
- BunomysBunomys is a genus of rodent from Sulawesi and Buton Island.
- BuprestidaeFamily of insects
- BuprestinaeBuprestinae is a subfamily of beetles in the family Buprestidae, containing the following
- BurbotSpecies of fish
- Burchell's courserBurchell's courser (Cursorius rufus) is a wader in the pratincole and courser family, Glar
- BurhinusGenus of birds
- BurhouIsland near Alderney, Channel Islands
- BuriolestesBuriolestes is a genus of early sauropodomorph dinosaurs from the Late Triassic Santa Mari
- Burmese catBreed of domestic cat
- Burmese ferret-badgerThe Burmese ferret-badger (Melogale personata), also known as the large-toothed ferret-bad
- BurnetiaExtinct genus of therapsids
- Burrowing owlSpecies of owl
- Burrowing parrotSpecies of parrot
- BursovaginoideaBursovaginoidea is one of the two orders in the phylum Gnathostomulida.
- Buru friarbirdThe Buru friarbird or black-faced friarbird (Philemon moluccensis) is a species of bird in
- Bush dogSpecies of carnivore
- BushshrikeFamily of birds
- ButasturGenus of birds
- ButcherbirdAustralasian songbird
- ButeoGenus of birds-of-prey including various buzzards and hawks
- ButeogallusGenus of birds
- ButhidaeThe Buthidae are the largest family of scorpions, containing about 100 genera and 1339 spe
- ButoridesGenus of birds
- ButterflyfishTropical marine fish of the family Chaetodontidae
- ButtonquailFamily of birds
- BycanistesGenus of birds
- BycatchFish or other marine species caught unintentionally
- ByssusFibre secreted by some molluscs
