What are some endangered animals that begin with the letter B?

Every endangered animal on the planet that begins with B:

• Babault's Mouse Shrew
• Babina subaspera
• Babirusa
• Bachman's Sparrow
• Bachman's Wood Warbler
• Back-striped Sportive Lemur
• Bactrian Camel
• Badplaas Black Millipede
• Badwater Snail
• Baer's Pochard
• Baer's Wood Mouse
• Baetica ustulata
• Bagangan
• Bagre De Rio Verde
• Bagre De Yaqui
• Bagrecito Andes Frog
• Bahama Swallow
• Bahaman Lesser Funnel-eared Bat
• Bahamas Rock Iguana
• Bahamian Hutia
• Bahia Antwren
• Bahia Spinetail
• Bahia Tapaculo
• Bahia Tyrannulet
• Baikal Teal
• Bailey's Shrew
• Bailey's Snake
• Baird's Trogon
• Baja California Legless Lizard
• Baja California Rock Squirrel
• Baja California Whiptail
• Baja Verapaz Salamander
• Baker's Robber Frog
• Baker's Small Toothed Harvest Mouse
• Bakossi Reed Frog
• Balabac Mouse Deer
• Balbalan Frog
• Balcones Cave Amphipod
• Balcones Cave Shrimp
• Bald Parrot
• Bald Uakari
• Bale Monkey
• Bale Mountains Frog
• Bale Mountains Tree Frog
• Bale Shrew
• Balearic Shearwater
• Balkan Blind Mole Rat
• Balkan Snow Vole
• Ball Bearing Frog
• Balloon Frog
• Balsas Armed Lizard
• Balsas Screech-owl
• Balsas Splitfin
• Baltic Sturgeon
• Balu Flying Frog
• Baluchistan Forest Dormouse
• Bamboutos Egg Frog
• Bamboutos Smalltongue Toad
• Bamenda Reed Frog
• Bamileke Plateau Frog
• Banahao Forest Frog
• Banana Bat
• Bananal Antbird
• Banbury Springs Limpet
• Band-bellied Crake
• Band-tailed Antwren
• Banded Cotinga
• Banded Day Gecko
• Banded Eagle Ray
• Banded Elimia
• Banded Flying Frog
• Banded Green Sunbird
• Banded Ground-cuckoo
• Banded Hare Wallaby
• Banded Horned Treefrog
• Banded Neolebias
• Banded Palm Civit
• Banded Surili
• Banded Toed Gecko
• Banded Wattle-eye
• Banded White-eye
• Banded Wobbegong
• Bandula Barb
• Banggai Cardinalfish
• Banggai Crow
• Bangs's Mountain Squirrel
• Bangwa Forest Warbler
• Bank Cormorant
• Banks Flying Fox
• Banner-tailed Kangaroo Rat
• Bannerman's Turaco
• Bannerman's Weaver
• Banteng
• Baolan
• Baoruco Burrowing Frog
• Baoruco Hammer Frog
• Bar-tailed Pheasant
• Bar-winged Wood-wren
• Barabattoia laddi
• Baracoa Dwarf Frog
• Barahona Rock Frog
• Baramundi Cod
• Barau's Petrel
• Barbados Racer
• Barbados Yellow Warbler
• Barbary Macaque
• Barbary Serval
• Barbary Sheep
• Barbatula eregliensis
• Barbatula samantica
• Barbatula seyhanensis
• Barbatula simavica
• Barbatula tschaiyssuensis
• Barbus acuticeps
• Barbus alluaudi
• Barbus amatolicus
• Barbus andrewi
• Barbus brevipinnis
• Barbus calidus
• Barbus caninus
• Barbus chantrei
• Barbus choloensis
• Barbus claudinae
• Barbus erubescens
• Barbus euboicus
• Barbus haasi
• Barbus harterti
• Barbus huloti
• Barbus issenensis
• Barbus ksibi
• Barbus laticeps
• Barbus longiceps
• Barbus lufukiensis
• Barbus macrolepis
• Barbus meridionalis
• Barbus motebensis
• Barbus nasus
• Barbus paytonii
• Barbus prespensis
• Barbus pseudotoppini
• Barbus quadralineatus
• Barbus reinii
• Barbus ruasae
• Barbus serengetiensis
• Barbus serra
• Barbus sp. nov. 'Banhine'
• Barbus sp. nov. 'Chimanimani'
• Barbus sp. nov. 'Nzoia'
• Barbus sp. nov. 'Pangani'
• Barbus sp. nov. 'Waterberg'
• Barbus sperchiensis
• Barbus tauricus
• Barbus treurensis
• Barbus trevelyani
• Barber's Sheep Frog
• Barbour's Forest Treefrog
• Barbour's Seahorse
• Barbour's Vlei Rat
• Barbuda Warbler
• Bardick Snake
• Bare-backed Rousette
• Bare-eyed Myna
• Bare-necked Umbrellabird
• Bare-throated Bellbird
• Bareback Shovelnose Ray
• Baringo
• Barker's Anole
• Barnard's Rock-catfish
• Barndoor Winter Skate
• Barr's Cave Amphipod
• Barred Bandicoot
• Barred Danio
• Barred Galaxias
• Barrens Topminnow
• Barrington Land Iguana
• Barrio's Frog
• Bartels's Rat
• Barton Springs Salamander
• Basecamp Giant Glass Frog
• Basking Shark
• Basra Reed Warbler
• Bastard Sturgeon
• Bastrop Crayfish
• Bat Cave Isopod
• Bates's Weaver
• Bath County Cave Amphipod
• Bathanalia howesi
• Bathurst Copper
• Batrachophrynus brachydactylus
• Batrachophrynus macrostomus
• Batrachuperus cochranae
• Batrachus uranoscopus
• Baudo Guan
• Baudo Oropendola
• Bavarian Pine Vole
• Baw Baw Frog
• Bay Lycian Salamander
• Bay-breasted Cuckoo
• Bay-capped Wren-spinetail
• Bay-ringed Tyrannulet
• Bay-vented Cotinga
• Bayadera ishigakiana
• Be'er Sheva Fringe-fingered Lizard
• Beach Mouse
• Beach Thick-knee
• Beach Vole
• Beal's-eyed Turtle
• Bear Lake Sculpin
• Bearded Black Millipede
• Bearded Guan
• Bearded Red Crayfish
• Bearded Saki
• Bearded Screech-owl
• Bearded Tachuri
• Bearded Wood-partridge
• Beaudouin's Snake-eagle
• Beautiful Crayfish
• Beautiful Jay
• Beautiful Mantella
• Beautiful Nursery-frog
• Beautiful Nuthatch
• Beautiful Parachute Spider
• Beautiful Petaltail
• Beautiful Shiner
• Beautiful Treerunner
• Beccari's Margareta Rat
• Bechstein's Bat
• Beck's Petrel
• Beck's Treefrog
• Beddome's Bubble-nest Frog
• Beddome's Toad
• Beddomeia hullii
• Beddomeia salmonis
• Bedford's Paradise-flycatcher
• Bedford-russell's Tree-nymph
• Bednall's Land Snail
• Bedotia geayi
• Bedotia madagascariensis
• Bedotia marojejy
• Bedotia masoala
• Bedotia sp. nov. 'Ankavia-Ankavanana'
• Bedotia sp. nov. 'Bemarivo'
• Bedotia sp. nov. 'Betampona'
• Bedotia sp. nov. 'Lazana'
• Bedotia sp. nov. 'Mahanara'
• Bedotia sp. nov. 'Manombo'
• Bedotia sp. nov. 'Namorona'
• Bedotia sp. nov. 'Nosivola'
• Bedotia sp. nov. 'Sambava'
• Bedotia sp. nov. 'Vevembe'
• Bedotia tricolor
• Bedriaga's Fringe-fingered Lizard
• Bedriaga's Rock Lizard
• Bedriaga's Skink
• Bee Creek Cave Harvestman
• Bee Hummingbird
• Beira Antelope
• Beisa Oryx
• Bekko Tombo
• Belding's Yellowthroat
• Belgrandiella alticola
• Belgrandiella austriana
• Belgrandiella bojnicensis
• Belgrandiella fuchsi
• Belgrandiella ganslmayri
• Belgrandiella mimula
• Belgrandiella parreyssi
• Belgrandiella pelerei
• Belgrandiella pyrenaica
• Belgrandiella slovenica
• Belgrandiella styriaca
• Belgrandiella wawrai
• Belkin's Dune Tabanid Fly
• Bell's False Brook Salamander
• Bell's Vireo
• Bellamya constricta
• Bellamya contracta
• Bellamya costulata
• Bellamya crawshayi
• Bellamya jucunda
• Bellamya leopoldvillensis
• Bellamya liberiana
• Bellamya monardi
• Bellamya mweruensis
• Bellamya pagodiformis
• Bellamya phthinotropis
• Bellamya robertsoni
• Bellamya rubicunda
• Bellamya trochearis
• Belle's Sanddragon
• Belly-spotted Treefrog
• Beloribitsa
• Belted Flycatcher
• Beluga
• Bemaraha Woolly Lemur
• Benavony Bright-eyed Frog
• Bendire's Thrasher
• Bendrao Digging Frog
• Bengal Florican
• Bengal Monitor
• Bengal Ornamental
• Bengal Roof Turtle
• Bengal Slow Loris
• Beni Titi Monkey
• Benkulen Toad
• Bennett's Tree Kangaroo
• Bentfin Devil Ray
• Benton County Cave Crayfish
• Berg River Redfin
• Berg's Tuco-tuco
• Berger's Cape Tortoise
• Berlepsch's Canastero
• Bermuda Cave Amphipod
• Bermuda Rock Lizard
• Bernhard's Mantella
• Bernier's Vanga
• Berry Cave Salamander
• Betampona Burrowing Frog
• Betic Midwife Toad
• Betsileo Bright-eyed Frog
• Betsileo Digging Frog
• Betta burdigala
• Betta chini
• Betta chloropharynx
• Betta hipposideros
• Betta livida
• Betta macrostoma
• Betta miniopinna
• Betta persephone
• Betta simplex
• Betta spilotogena
• Betta tomi
• Bhutan Giant Flying Squirrel
• Biak Bare-backed Fruit Bat
• Biak Black Flycatcher
• Biak Coucal
• Biak Dark Crow
• Biak Giant Rat
• Biak Megapode
• Biak Monarch
• Biak Paradise-kingfisher
• Biak Scops-owl
• Biak Threespot Crow
• Biak Tiger
• Biak White-eye
• Bibron's Toadlet
• Bicknell's Thrush
• Bicol Narrowmouth Toad
• Bicolor Cactus Snail
• Bicolored Antpitta
• Bicoloured Antvireo
• Bicoloured Frog
• Bienkotetrix transsylvanicus
• Bifurcated Cave Amphipod
• Big Bend Gambusia
• Big Bend Slider
• Big Blue Spring Cave Crayfish
• Big Deer Mouse
• Big Levels Salamander
• Big Mexican Small-eared Shrew
• Big Pine Key Conehead Katydid
• Big Pocket Gopher
• Big Sandy Crayfish
• Big South Fork Crayfish
• Big White Fish
• Big-cheeked Cave Crayfish
• Big-eared Chirping Frog
• Big-eyed Forest Treefrog
• Big-footed Minute Salamander
• Big-headed Amazon River Turtle
• Big-headed Mole Rat
• Big-headed Turtle
• Bigeye Lates
• Bigeye Tuna
• Bigfoot Leopard Frog
• Bigfoot Splayfoot Salamander
• Bighorn Sheep
• Bignose Fanskate
• Binchuan Horned Toad
• Bioko Forest Shrew
• Biomphalaria barthi
• Biomphalaria tchadiensis
• Birdlike Noctule
• Birdsnest Coral
• Birdwing Pearlymussel
• Bismarck Flying Fox
• Bismarck Giant Rat
• Bismarck Kingfisher
• Bismarck Masked-owl
• Bismarck Melidectes
• Bismarck Thicketbird
• Bitungu
• Bizant River Shark
• Black Abalone
• Black And Rufous Elephant Shrew
• Black Caiman
• Black Catbird
• Black Clubshell
• Black Cod
• Black Colobus Monkey
• Black Creek Crayfish
• Black Crested Gibbon
• Black Crested Mangabey
• Black Crowned-crane
• Black Dorcopsis Wallaby
• Black False Brook Salamander
• Black Finless Porpoise
• Black Flathead Toad
• Black Giant Squirrel
• Black Grouper
• Black Guan
• Black Harrier
• Black Honey-buzzard
• Black Hornbill
• Black Inca
• Black Jackrabbit
• Black Jumping Salamander
• Black Knobby Newt
• Black Lemur
• Black Long-fingered Frog
• Black Magpie
• Black Marsh Turtle
• Black Mogurnda
• Black Mountain Boulder Frog
• Black Mudalia
• Black Munia
• Black Muntjac
• Black Musk Deer
• Black Oriole
• Black Partridge
• Black Racer
• Black Rail
• Black Rhinoceros
• Black Rockfish
• Black Salamander
• Black Sea Bass
• Black Sea Viper
• Black Shama
• Black Sicklebill
• Black Softshell Turtle
• Black Solitary Eagle
• Black Squirrel Monkey
• Black Stilt
• Black Tinamou
• Black Toad
• Black Torrent Toad
• Black Wallaroo
• Black Water Frog
• Black-and-chestnut Eagle
• Black-and-gold Cotinga
• Black-and-gold Tanager
• Black-and-rufous Flycatcher
• Black-and-tawny Seedeater
• Black-and-white Bulbul
• Black-and-white Monarch
• Black-and-white Monjita
• Black-and-white Ruffed Lemur
• Black-and-white Tanager
• Black-and-yellow Broadbill
• Black-backed Shadowdamsel
• Black-backed Tanager
• Black-banded Bannerwing
• Black-banded Barbet
• Black-banded Flycatcher
• Black-bearded Flying Fox
• Black-bellied Malkoha
• Black-bellied Seedeater
• Black-bellied Tern
• Black-bibbed Cicadabird
• Black-billed Amazon
• Black-billed Flycatcher
• Black-billed Gull
• Black-blotched Stingray
• Black-bodied Woodpecker
• Black-breasted Buttonquail
• Black-breasted Hill Turtle
• Black-breasted Parrotbill
• Black-breasted Puffleg
• Black-browed Albatross
• Black-capped Petrel
• Black-capped Piprites
• Black-capped Vireo
• Black-cheeked Ant-tanager
• Black-cheeked Lovebird
• Black-chested Honeyeater
• Black-chinned Monarch
• Black-clawed Brush-furred Rat
• Black-crest Elimia
• Black-crowned Barwing
• Black-crowned Dwarf Marmoset
• Black-eared Mantella
• Black-eared Miner
• Black-eyed Treefrog
• Black-faced Black Spider Monkey
• Black-faced Impala
• Black-faced Pitta
• Black-faced Spoonbill
• Black-Finned Goodeid
• Black-footed Albatross
• Black-footed Cat
• Black-footed Ferret
• Black-footed Gray Langur
• Black-footed Rock Wallaby
• Black-footed Tree Rat
• Black-fronted Piping-guan
• Black-fronted Tern
• Black-fronted Titi Monkey
• Black-fronted Wood-quail
• Black-handed Tamarin
• Black-headed Berryeater
• Black-headed Ibis
• Black-headed Parrotbill
• Black-headed Rufous Warbler
• Black-headed Uakari
• Black-hooded Antwren
• Black-hooded Coucal
• Black-hooded Laughingthrush
• Black-horned Capuchin
• Black-legged Dacnis
• Black-legged Poison Frog
• Black-lored Parrot
• Black-masked Finch
• Black-necked Crane
• Black-necked Stork
• Black-polled Yellowthroat
• Black-snouted Flying Frog
• Black-spectacled Brush-finch
• Black-spotted Cuscus
• Black-spotted False Brook Salamander
• Black-spotted Newt
• Black-spotted Pond Frog
• Black-striped Squirrel
• Black-tailed Antbird
• Black-tailed Deer Mouse
• Black-tailed Godwit
• Black-tailed Hutia
• Black-thighed Puffleg
• Black-throated Babbler
• Black-throated Blue Robin
• Black-throated Finch
• Black-throated Shrikebill
• Black-throated Wren-babbler
• Black-vented Shearwater
• Black-webbed Treefrog
• Black-winged Lory
• Black-winged Pratincole
• Black-winged Starling
• Black-wristed Deer Mouse
• Blackbarred Crayfish
• Blackbelly Garter Snake
• Blackbelted Crayfish
• Blackbuck
• Blackburn's Sphinx Moth
• Blackchin Guitarfish
• Blackfin Pupfish
• Blackish Shrew Opossum
• Blackish-blue Seedeater
• Blackish-breasted Babbler
• Blackish-headed Spinetail
• Blackmouth Shiner
• Blacksaddled Coral Grouper
• Blackspot Shark
• Blackspot Skate
• Blackspot Tuskfish
• Blackspotted Long-fingered Frog
• Blakiston's Fish-owl
• Blanc's Fringe-toed Lizard
• Blanc's Sand Racer
• Blastomussa wellsi
• Bleeding Toad
• Bleher's Rainbowfish
• Blick's Grass Rat
• Blind Cave Beetle
• Blind Cave Fish
• Blind Loach
• Blind Naked-belly Barbel
• Bliss Rapid Snail
• Bloater
• Blommers Bright-eyed Frog
• Blond Titi Monkey
• Blonde Capuchin
• Blossomcrown
• Blotched Mogurnda
• Blotchside Logperch
• Blue Bird-of-paradise
• Blue Bustard
• Blue Chaffinch
• Blue Coral
• Blue Crane
• Blue Duck
• Blue Finch
• Bluefin Tuna
• Blue Giant Glass Frog
• Blue Lorikeet
• Blue Mountain Vireo
• Blue Mountain Water Skink
• Blue Paradise-flycatcher
• Blue Ridge Gray-cheeked Salamander
• Blue Shiner
• Blue Skate
• Blue Spring Aphaostracon
• Blue Swallow
• Blue Whale
• Blue-and-gold Tanager
• Blue-and-orange Threadtail
• Blue-banded Kingfisher
• Blue-bellied Parrot
• Blue-billed Curassow
• Blue-billed Duck
• Blue-capped Fruit-dove
• Blue-capped Hummingbird
• Blue-cheeked Amazon
• Blue-crowned Laughingthrush
• Blue-eyed Aquatic Treefrog
• Blue-eyed Cockatoo
• Blue-eyed Cuscus
• Blue-eyed Ground Dove
• Blue-eyed Spotted Cuscus
• Blue-faced Rail
• Blue-fronted Lorikeet
• Blue-headed Macaw
• Blue-headed Pitta
• Blue-headed Quail-dove
• Blue-headed Racquet-tail
• Blue-legged Mantella
• Blue-masked Leafbird
• Blue-naped Parrot
• Blue-rumped Parrot
• Blue-sided Treefrog
• Blue-spotted Mexican Treefrog
• Blue-streaked Lory
• Blue-throated Macaw
• Blue-throated Parakeet
• Blue-whiskered Tanager
• Blue-winged Goose
• Blue-winged Macaw
• Blue-winged Racquet-tail
• Bluebarred Pygmy Sunfish
• Bluegrass Crayfish
• Bluegray Carpetshark
• Bluemask Darter
• Bluespotted Bamboo Shark
• Bluestripe Darter
• Bluetail Glass Barb
• Blunt-eared Bat
• Blunt-headed Salamander
• Blunt-nosed Leopard Lizard
• Blunt-toed Chirping Frog
• Bluntnose Shiner
• Blyth's Flying Fox
• Blyth's Kingfisher
• Blyth's River Frog
• Blyth's Tragopan Pheasant
• Blythe River Freshwater Snail
• Bobiri Reed Frog
• Boca de Yumuri Frog
• Bocaccio Rockfish
• Boeckella bispinosa
• Boeckella calcaris
• Boeckella geniculata
• Boeckella nyoraensis
• Boeckella shieli
• Boeseman's Rainbowfish
• Boettger's Grainy Frog
• Boettgeria obesiuscula
• Bofilliella subarcuata
• Bog Turtle
• Bogidiella bermudensis
• Bogota Rail
• Bogota Treefrog
• Boisduval's Blue Butterfly
• Bokermann's Bromeliad Frogs
• Bokermannohyla izecksohni
• Bokermannohyla vulcaniae
• Bolano's Woodrat
• Bold Characodon
• Bolifamba Egg Frog
• Bolivar Bush Toad
• Bolivian Chinchilla Rat
• Bolivian Recurvebill
• Bolivian Spinetail
• Bolivian Water Frog
• Bolson Tortoise
• Bombay Bubble-nest Frog
• BonDELLe
• Bone Cave Harvestman
• Boneberg's Frog
• Bonetto's Tuco-tuco
• Bongo
• Bonhote's Mouse
• Bonin Flying Fox
• Bonin White-eye
• Boninagrion ezoin
• Boninena callistoderma
• Boninena hiraseana
• Boninena ogasawarae
• Boninosuccinea ogasawarae
• Boninosuccinea punctulispira
• Bontebok
• Bonthain Tiger
• Bonytail Chub
• Boophis tampoka
• Booroolong Frog
• Booted Macaque
• Bopatalawa Rice Frog
• Boqueron Robber Frog
• Boquete Rocket Frog
• Borax Lake Chub
• Borbour's Montane Pitviper
• Bordered Knob-tipped Shadowdamsel
• Boreal Toad
• Boreas uglowi
• Boribory Rain Frog
• Bornean Banded Langur
• Bornean Bristlehead
• Bornean Flat-headed Frog
• Bornean Frogmouth
• Bornean Ground-cuckoo
• Bornean Leaf-nosed Bat
• Bornean Orangutan
• Bornean Peacock-pheasant
• Bornean River Turtle
• Bornean Slow Loris
• Bornean Water Shrew
• Bornean Wren-babbler
• Borneo Bay Cat
• Borneo Bubble-nest Frog
• Borneo Narrowmouth Toad
• Borneo Shark
• Borneo Splash Frog
• Boroda expatria
• Bot River Klipfish
• Botha's Lark
• Bothriembryon bradshaweri
• Bothriembryon brazieri
• Bothriembryon glauerti
• Bothriembryon irvineanus
• Bothriembryon perobesus
• Bothriembryon praecelcus
• Bothriembryon spenceri
• Bothriembryon whitleyi
• Bottiella cucutensis
• Bottiella medemi
• Bottlenose Dolphin
• Bottlenose Skate
• Botucatu Escuerzo
• Boucardicus albocinctus
• Boucardicus antiquus
• Boucardicus carylae
• Boucardicus culminans
• Boucardicus curvifolius
• Boucardicus delicatus
• Boucardicus divei
• Boucardicus esetrae
• Boucardicus fidimananai
• Boucardicus fortistriatus
• Boucardicus magnilobatus
• Boucardicus mahermanae
• Boucardicus rakotoarisoni
• Boucardicus randalanai
• Boucardicus simplex
• Boucardicus tridentatus
• Boucardicus victorhernandezi
• Bougainville Bush-warbler
• Bougainville Giant Rat
• Bougainville Monkey-faced Bat
• Bougainville Thicketbird
• Boulder Darter
• Boulder Pile Mountain Snail
• Boulenger's Backpack Frog
• Boulenger's Egg Frog
• Boulenger's Indian Frog
• Boulenger's Rocket Frog
• Boulenger's Small Flying Frog
• Boulenger's Spiny Frog
• Boulenger's Stubfoot Toad
• Bounty Islands Shag
• Bourlon's Genet
• Bousfield's Amphipod
• Bowhead Whale
• Bowman's Cave Amphipod
• Bowmouth Guitarfish
• Bowry Creek Freshwater Snail
• Boxer Pupfish
• Boyaca Giant Glass Frog
• Bracket Coral
• Bradytriton silus
• Braken Bat Cave Meshweaver
• Bramble Cay Mosaic-tailed Rat
• Branchinecta belki
• Branchinecta mexicana
• Branchinella alachua
• Branchinella apophysata
• Branchinella basispina
• Branchinella denticulata
• Branchinella lithaca
• Branchinella simplex
• Branchinella wellardi
• Branching Anchor Coral
• Branching Frogspawn Coral
• Brandt's Hamster
• Brash Bubble-nest Frog
• Brasilia Lyrefin
• Brasilia Tapaculo
• Brass's Friarbird
• Brauer's Burrowing Skink
• Braun's Toad
• Brawleys Fork Crayfish
• Brazilian Arboreal Mouse
• Brazilian Black-tyrant
• Brazilian Blind Electric Ray
• Brazilian Button Frog
• Brazilian Cownose Ray
• Brazilian Funnel-eared Bat
• Brazilian Giant Tortoise
• Brazilian Guitarfish
• Brazilian Merganser
• Brazilian River Frog
• Brazilian Sideneck Turtle
• Brazilian Snake-necked Turtle
• Brazilian Three-banded Armadillo
• Brazilian Three-toed Sloth
• Brazoria Crayfish
• Brazos River Watersnake
• Breasts-of-Julie Frog
• Breedlove's Anole
• Brenton Blue Butterfly
• Breyer's Long-tailed Seps
• Brick Seamoth
• Bridges's Degu
• Bridled Nail-tailed Wallaby
• Bridled White-eye
• Bridouxia ponsonbyi
• Bridouxia praeclara
• Brigalow Scaly-foot
• Brindle Bass
• Brine Shrimp
• Bristle-thighed Curlew
• Bristle-tipped Sanddargon
• Bristled Grassbird
• Broad River Spiny Crayfish
• Broad Sea Fan
• Broad-fingered Crayfish
• Broad-headed Snake
• Broad-snouted Caiman
• Broad-striped Dasyure
• Broad-striped Mongoose
• Broad-tailed Grassbird
• Broad-toothed Mouse
• Broadfoot Climbing Salamander
• Broadley's Mountain Frog
• Broadley's Ridged Frog
• Broadnose Wedgefish
• Bromeliad Treefrog
• Brongersma's Toad
• Bronze Quoll
• Bronze Tube-nosed Bat
• Bronze Whaler
• Bronzeback Snake-lizard
• Bronzed Frog
• Brook Elimia
• Brook Snake
• Brooks's Dyak Fruit Bat
• Broom Hare
• Brother's Island Tuatara
• Brown Bear
• Brown Eared Pheasant
• Brown False Brook Salamander
• Brown Fulvetta
• Brown Hyena
• Brown Madagascar Frog
• Brown Mesite
• Brown Palm Civet
• Brown Pelican
• Brown Robber Frog
• Brown Stingray
• Brown Tanager
• Brown Teal
• Brown Tropical Frog
• Brown Wood-rail
• Brown's Hutia
• Brown-backed Dove
• Brown-backed Flowerpecker
• Brown-backed Parrotlet
• Brown-banded Antpitta
• Brown-cheeked Hornbill
• Brown-chested Jungle-flycatcher
• Brown-headed Crow
• Brown-headed Spider Monkey
• Brown-marbled Grouper
• Brown-reticulate Stingray
• Brown-spotted Catshark
• Brown-spotted Rockcod
• Brown-tailed Mongoose
• Brown-winged Kingfisher
• Brownband Numbfish
• Brownstriped Grunt
• Bruijn's Brush-turkey
• Bruijn's Pogonomelomys
• Brumback's Night Monkey
• Bruneau Hot Springsnail
• Brush-tailed Phascogale
• Brush-tailed Rabbit Rat
• Brush-tailed Rat-kangaroo
• Brush-tailed Rock Wallaby
• Bryant's Woodrat
• Bryophryne bustamantei
• Bryophryne cophites
• Bubble Coral (Plerogyra discus)
• Bubble Coral (Plerogyra simplex)
• Bubble Coral (Plerogyra sinuosa)
• Bubble-nest Frog
• Buckley's Giant Glass Frog
• Buea Smalltongue Toad
• Buena Vista Lake Ornate Shrew
• Buenaventura Robber Frog
• Buenos Aires Leaf-eared Mouse
• Buettikofer's Shrew
• Buff-breasted Buttonquail
• Buff-breasted Sandpiper
• Buff-breasted Tody-tyrant
• Buff-browed Chachalaca
• Buff-headed Capuchin
• Buff-necked Woodpecker
• Buff-throated Purpletuft
• Buff-throated Tody-tyrant
• Buff-vented Bulbul
• Buffetia retinaculum
• Buffy-fronted Seedeater
• Buffy-headed Marmoset
• Bugun Liocichla
• Bulgarian Emerald
• Bulinus camerunensis
• Bulinus hightoni
• Bulinus mutandensis
• Bulinus nyassanus
• Bulinus succinoides
• Bulinus transversalis
• Buller's Albatross
• Buller's Chipmunk
• Buller's Shearwater
• Bullocks Mountains False Toad
• Bullseye Electric Ray
• Bulmer's Fruit Bat
• Bulo Burti Bush-shrike
• Bumblebee Bat
• Bumphead Parrotfish
• Bunawan Wart Frog
• Bunn's Short-tailed Bandicoot Rat
• Burmagomphus sivalikensis
• Burmeister's Armadillo
• Burmese Peacock Softshell Turtle
• Burmese Peacock Turtle
• Burmese Roofed Turtle
• Burmese Starred Tortoise
• Burnsville Cove Cave Amphipod
• Burnup's Hunter Slug
• Burnupia crassistriata
• Burnupia stuhlmanni
• Burrowes' Giant Glass Frog
• Burrowing Bog Crayfish
• Burrowing Crayfish (Engaeus australis)
• Burrowing Crayfish (Engaeus curvisuturus)
• Burrowing Crayfish (Engaeus disjuncticus)
• Burrowing Crayfish (Engaeus granulatus)
• Burrowing Crayfish (Engaeus mallacoota)
• Burrowing Crayfish (Engaeus martigener)
• Burrowing Crayfish (Engaeus nulloporius)
• Burrowing Crayfish (Engaeus orramakunna)
• Burrowing Crayfish (Engaeus phyllocercus)
• Burrowing Crayfish (Engaeus rostrogaleatus)
• Burrowing Crayfish (Engaeus spinicaudatus)
• Burrowing Crayfish (Engaeus sternalis)
• Burrowing Crayfish (Engaeus urostrictus)
• Burrowing Grainy Frog
• Burrowing Vole
• Burt's Deer Mouse
• Burton's Vlei Rat
• Buru Cuckooshrike
• Buru Opalescent Birdwing
• Buru Thrush
• Bush Blackcap
• Bush Dog
• Bush Thick-knee
• Bushoho Reed Frog
• Busuanga Wart Frog
• Butler's Dunnart
• Buttons Rivulet Freshwater Snail
• Buxton's Jird
• Buzzing Frog
• Bythinella badensis
• Bythinella bavarica
• Bythinella bicarinata
• Bythinella compressa
• Bythinella cylindrica
• Bythinella dunkeri
• Bythinella padiraci
• Bythinella viridis
• BythiOSpeum acicula
• BythiOSpeum articense
• BythiOSpeum bourguignati
• BythiOSpeum cisterciensorum
• BythiOSpeum garnieri
• BythiOSpeum geyeri
• BythiOSpeum noricum
• BythiOSpeum pfeifferi
• BythiOSpeum quenstedti
• BythiOSpeum reisalpense
• BythiOSpeum sandbergeri
• BythiOSpeum tschapecki