Species starting with B
Index built 10 November 2026
- Ba humbugi EN
- Bachman's Warbler Vermivora bachmanii CR
- Baer's Pochard Aythya baeri CR
- Bahama Oriole Icterus northropi EN
- Bahama Warbler Setophaga flavescens EN
- Bahamian hutia Geocapromys ingrahami CR
- Baiji Lipotes vexillifer CR
- Baird's tapir Tapirus bairdii EN
- Bali Myna Leucopsar rothschildi CR
- Bali Shortcake Acropora latistella EN
- Banasura laughingthrush Montecincla jerdoni EN
- Banded dune snail Helminthoglypta walkeriana CR
- Banded houndshark Triakis scyllium EN
- Banded surili Presbytis femoralis CR
- Banff Springs snail Physella johnsoni CR
- Banggai cardinalfish Pterapogon kauderni EN
- Banggai Crow Corvus unicolor CR
- Bangka Slow Loris Nycticebus bancanus CR
- Bank Cormorant Phalacrocorax neglectus EN
- Banteng Bos javanicus CR
- Barau's Petrel Pterodroma baraui EN
- Barbary macaque Macaca sylvanus EN
- Barrier skink Oligosoma judgei CR
- Barton Springs salamander Eurycea sosorum EN
- Basking shark Cetorhinus maximus EN
- Bastard sturgeon Acipenser nudiventris CR
- Bateleur Terathopius ecaudatus EN
- Baudin's Black Cockatoo Zanda baudinii CR
- Bavayia exsuccida CR
- Baw Baw frog Philoria frosti CR
- Bawean deer Axis kuhlii CR
- Bay cat Catopuma badia EN
- Bay-breasted Cuckoo Coccyzus rufigularis EN
- Be'er Sheva Fringe-fingered Lizard Acanthodactylus beershebensis CR
- Beilun Pygmy Frog Microhyla beilunensis CR
- Beluga Huso huso CR
- Bemaraha woolly lemur Avahi cleesei CR
- Bengal Florican Houbaropsis bengalensis CR
- Bengal slow loris Nycticebus bengalensis EN
- Bentfin devil ray Mobula thurstoni CR
- Bermuda Petrel Pterodroma cahow EN
- Bermuda skink Plestiodon longirostris CR
- Bernier's Teal Anas bernieri EN
- Berry Cave salamander Gyrinophilus gulolineatus EN
- Bhutanitis ludlowi EN
- Big-headed mole rat Tachyoryctes macrocephalus EN
- Black crested gibbon Nomascus concolor CR
- Black Harrier Circus maurus EN
- Black lemur Eulemur macaco EN
- Black Lion Tamarin Leontopithecus chrysopygus EN
- Black marsh turtle Siebenrockiella crassicollis EN
- Black Musk Deer Moschus fuscus EN
- Black Nerite Theodoxus prevostianus EN
- Black Rail Laterallus jamaicensis EN
- Black rhinoceros Diceros bicornis CR
- Black Rosy Finch Leucosticte atrata EN
- Black softshell turtle Nilssonia nigricans CR
- Black Stilt Himantopus novaezelandiae CR
- Black-and-chestnut eagle Spizaetus isidori EN
- Black-and-white ruffed lemur Varecia variegata CR
- Black-bearded flying fox Pteropus melanopogon EN
- Black-bellied Tern Sterna acuticauda EN
- Black-breasted puffleg Eriocnemis nigrivestis EN
- Black-capped Petrel Pterodroma hasitata EN
- Black-eared miner Manorina melanotis EN
- Black-footed ferret Mustela nigripes EN
- Black-fronted Piping Guan Pipile jacutinga EN
- Black-fronted Tern Chlidonias albostriatus EN
- Black-hooded Antwren Formicivora erythronotos EN
- Black-hooded Coucal Centropus steerii CR
- Black-legged dart frog Phyllobates bicolor EN
- Black-naped Pheasant-pigeon Otidiphaps insularis CR
- Black-shanked douc Pygathrix nigripes CR
- Black-spotted cuscus Spilocuscus rufoniger CR
- Black-winged Starling Acridotheres melanopterus EN
- Blackchin guitarfish Glaucostegus cemiculus CR
- Blacknose shark Carcharhinus acronotus EN
- Blanding's turtle Emydoidea blandingii EN
- Bleeding toad Leptophryne cruentata CR
- Blind cave eel Ophisternon candidum EN
- Blond capuchin Sapajus flavius EN
- Blue Duck Hymenolaimus malacorhynchos EN
- Blue iguana Cyclura lewisi EN
- Blue whale Balaenoptera musculus EN
- Blue-backed parrot Tanygnathus everetti EN
- Blue-banded Kingfisher Alcedo euryzona CR
- Blue-billed Curassow Crax alberti CR
- Blue-crowned Laughingthrush Pterorhinus courtoisi CR
- Blue-eyed black lemur Eulemur flavifrons CR
- Blue-eyed Ground Dove Columbina cyanopis CR
- Blue-headed Quail-Dove Starnoenas cyanocephala EN
- Blue-tailed Skink Cryptoblepharus egeriae EW
- Blue-throated Hillstar Oreotrochilus cyanolaemus CR
- Blue-throated Macaw Ara glaucogularis CR
- Blue-winged Racket-tail Prioniturus verticalis CR
- Bluemask darter Etheostoma akatulo EN
- Bog turtle Glyptemys muhlenbergii CR
- Bogong moth Agrotis infusa EN
- Bokermannohyla vulcaniae EN
- Bombus dahlbomii EN
- Bombus suckleyi CR
- Bonin flying fox Pteropus pselaphon EN
- Bonnethead Sphyrna tiburo EN
- Bonobo Pan paniscus EN
- Bonytail chub Gila elegans CR
- Boophis anjanaharibeensis EN
- Boophis ankarafensis CR
- Booroolong frog Litoria booroolongensis EN
- Bornean orangutan Pongo pygmaeus CR
- Bornean Peacock-Pheasant Polyplectron schleiermacheri EN
- Borneo broadfin shark Lamiopsis tephrodes EN
- Borneo shark Carcharhinus borneensis CR
- Botha's lark Spizocorys fringillaris EN
- Bottlebrush Coral Acropora elseyi EN
- Boulengerula niedeni EN
- Boulengerula taitana EN
- Bowmouth guitarfish Rhina ancylostoma CR
- Brachylophus bulabula EN
- Bramble shark Echinorhinus brucus EN
- Brauer's giant mite Sternothyrus braueri EN
- Brazilian large-eyed stingray Hypanus marianae EN
- Brazilian maze coral Meandrina brasiliensis CR
- Brazilian Merganser Mergus octosetaceus CR
- Brookesia minima EN
- Brown spider monkey Ateles hybridus CR
- Brown weeper capuchin Cebus brunneus EN
- Bryan's Shearwater Puffinus bryani CR
- Buffy-tufted marmoset Callithrix aurita EN
- Bugun Liocichla Liocichla bugunorum CR
- Bull ray Aetomylaeus bovinus CR
- Burgan skink Oligosoma burganae CR
- Butterfly splitfin Ameca splendens CR
- Bythinella cylindrica CR
- Bythinella viridis EN