There are 135 mammals that start with the letter B, from Babirusa to Bushbuck. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the mammals belongs to
Habitat: The places or type of weather the mammals lives in
Scientific name: The designation that scientists use to catalog the species
Name: Babirusa
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Babyrousa
Name: Babirussa
Order: Artiodactyla
Habitat: Tropical forests of Indonesia
Scientific name: Babyrousa
Name: Bactrian Camel
Order: Artiodactyla
Habitat: Central Asia
Scientific name: Camelus bactrianus
Name: Bactrian Mouse
Order: Rodentia
Habitat: Central Asia
Scientific name: Mus camptorrhinus
Name: Badger
Order: Carnivora
Habitat: Temperate regions of Europe and Asia
Scientific name: Meles meles
Name: Baiji
Order: Cetacea
Habitat: Yangtze River in China
Scientific name: Lipotes vexillifer
Name: Baikal Seal
Order: Carnivora
Habitat: Lake Baikal
Scientific name: Pusa sibirica
Name: Baillie's Pocket Gopher
Order: Rodentia
Habitat: Prairies and grasslands
Scientific name: Geomys bursarius
Name: Baird's Beaked Whale
Order: Cetacea
Habitat: Deep ocean
Scientific name: Berardius bairdii
Name: Baird's Dolphin
Order: Cetacea
Habitat: Pacific Ocean, off the coasts of Peru and Chile
Scientific name: Lagenorhynchus bairdi
Name: Baird's Tapir
Order: Perissodactyla
Habitat: Central America
Scientific name: Tapirus bairdii
Name: Bajing
Order: Rodentia
Habitat: Tropical forests
Scientific name: Callosciurus
Name: Baker's Cane Rat
Order: Rodentia
Habitat: Savannas and grasslands
Scientific name: Thryonomys swinderianus
Name: Bale Mountains Vervet
Order: Primates
Habitat: Afro-alpine moorlands
Scientific name: Chlorocebus djamdjamensis
Name: Balinese Cat
Order: Carnivora
Habitat: Indonesia
Scientific name: Prionailurus bengalensis
Name: Balkan Chamois
Order: Artiodactyla
Habitat: Southeastern Europe
Scientific name: Rupicapra rupicapra
Name: Balkan Lynx
Order: Carnivora
Habitat: Balkan Peninsula
Scientific name: Lynx lynx balcanicus
Name: Baluchistan Gazelle
Order: Artiodactyla
Habitat: Pakistan
Scientific name: Gazella subgutturosa erlangeri
Name: Baluchistan Gerbil
Order: Rodentia
Habitat: Pakistan
Scientific name: Gerbillus nanus
Name: Baluchistan Mouse-Eared Bat
Order: Chiroptera
Habitat: Pakistan
Scientific name: Myotis baluchistanicus
Name: Baluchistan Wild Ass
Order: Perissodactyla
Habitat: Pakistan
Scientific name: Equus hemionus
Name: Baluchistan Woodchuck
Order: Rodentia
Habitat: Pakistan
Scientific name: Marmota caudata
Name: Banded Anteater
Order: Dasyuromorphia
Habitat: Australia
Scientific name: Myrmecobius fasciatus
Name: Banded Cat
Order: Carnivora
Habitat: Indonesia
Scientific name: Prionailurus planiceps
Name: Banded Flying Fox
Order: Chiroptera
Habitat: Indonesia
Scientific name: Pteropus bicolor
Name: Banded Hare-Wallaby
Order: Diprotodontia
Habitat: Shrublands and grasslands
Scientific name: Lagostrophus fasciatus
Name: Banded Linsang
Order: Carnivora
Habitat: Forests of Southeast Asia
Scientific name: Prionodon linsang
Name: Banded Mongoose
Order: Carnivora
Habitat: Sub-Saharan Africa
Scientific name: Mungos mungo
Name: Banded Mongoose Lemur
Order: Primates
Habitat: Madagascar
Scientific name: Lemur catta
Name: Banded Palm Civet
Order: Carnivora
Habitat: Southeast Asia
Scientific name: Hemigalus derbyanus
Name: Banded Pig-Tailed Langur
Order: Primates
Habitat: Tropical forests
Scientific name: Simias concolor
Name: Banded Rock Wallaby
Order: Diprotodontia
Habitat: Rocky outcrops
Scientific name: Petrogale lateralis
Name: Banded Serow
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Capricornis sumatraensis
Name: Banded Surili
Order: Primates
Habitat: Tropical forests
Scientific name: Presbytis femoralis
Name: Banded Tamarin
Order: Primates
Habitat: Tropical forests
Scientific name: Saguinus bicolor
Name: Banded-Tailed Woolly Bat
Order: Chiroptera
Habitat: Southeast Asia
Scientific name: Kerivoula picta
Name: Bantam Mouse
Order: Rodentia
Habitat: Indonesia
Scientific name: Mus fragilicauda
Name: Banteng
Order: Artiodactyla
Habitat: Forests and grasslands of Southeast Asia
Scientific name: Bos javanicus
Name: Baraba Squirrel
Order: Rodentia
Habitat: Boreal forests
Scientific name: Tamiasciurus sibiricus
Name: Barasingha
Order: Artiodactyla
Habitat: India
Scientific name: Rucervus duvaucelii
Name: Barbary Deer
Order: Artiodactyla
Habitat: North Africa
Scientific name: Cervus elaphus barbarus
Name: Barbary Deer Mouse
Order: Rodentia
Habitat: Coastal California
Scientific name: Peromyscus californicus
Name: Barbary Ground Squirrel
Order: Rodentia
Habitat: North Africa
Scientific name: Atlantoxerus getulus
Name: Barbary Lion
Order: Carnivora
Habitat: North Africa
Scientific name: Panthera leo leo
Name: Barbary Macaque
Order: Primates
Habitat: Atlas Mountains of North Africa
Scientific name: Macaca sylvanus
Name: Barbary Mouse
Order: Rodentia
Habitat: Arid regions
Scientific name: Mus spretus
Name: Barbary Red Deer
Order: Artiodactyla
Habitat: North Africa
Scientific name: Cervus elaphus barbarus
Name: Barbary Sheep
Order: Artiodactyla
Habitat: North Africa
Scientific name: Ammotragus lervia
Name: Barbary Shrew
Order: Eulipotyphla
Habitat: North Africa
Scientific name: Crocidura brachyura
Name: Barbary Stag
Order: Artiodactyla
Habitat: Temperate forests
Scientific name: Cervus elaphus barbarus
Name: Barbary Striped Grass Mouse
Order: Rodentia
Habitat: North Africa
Scientific name: Lemniscomys barbarus
Name: Barbastelle
Order: Chiroptera
Habitat: Europe and Asia
Scientific name: Barbastella barbastellus
Name: Barbastelle Bat
Order: Chiroptera
Habitat: Eurasia
Scientific name: Barbastella barbastellus
Name: Bareen Gazelle
Order: Artiodactyla
Habitat: West Africa
Scientific name: Nanger dama
Name: Baret's Sportive Lemur
Order: Primates
Habitat: Dry forests
Scientific name: Lepilemur bareyi
Name: Baringo Giraffe
Order: Artiodactyla
Habitat: Kenya and Uganda
Scientific name: Giraffa camelopardalis rothschildi
Name: Barka Giraffe
Order: Artiodactyla
Habitat: Northeastern Africa
Scientific name: Giraffa camelopardalis barkeri
Name: Barkley's Short-Tailed Bat
Order: Chiroptera
Habitat: Central America
Scientific name: Carollia barkleyi
Name: Barren Ground Caribou
Order: Artiodactyla
Habitat: Arctic regions of North America
Scientific name: Rangifer tarandus groenlandicus
Name: Barren Ground Shrew
Order: Eulipotyphla
Habitat: North America
Scientific name: Sorex ugyunak
Name: Barter Island Lemming
Order: Rodentia
Habitat: Alaska
Scientific name: Lemmus trimucronatus
Name: Barter's Vole
Order: Rodentia
Habitat: China
Scientific name: Lasiopodomys bartelsii
Name: Bartlett's Crab-Eating Rat
Order: Rodentia
Habitat: Indonesia
Scientific name: Vo oemlurns bartletti
Name: Bartlett's Cuscus
Order: Diprotodontia
Habitat: Tropical forests
Scientific name: Phalanger bartletti
Name: Basilan Wild Boar
Order: Artiodactyla
Habitat: Philippines
Scientific name: Sus ahoenobarbus
Name: Basset Hound
Order: Carnivora
Habitat: Domestic
Scientific name: Canis lupus familiaris
Name: Bat
Order: Chiroptera
Habitat: Worldwide
Scientific name: Various species
Name: Bat-Eared Fox
Order: Carnivora
Habitat: Africa
Scientific name: Otocyon megalotis
Name: Bates's Dwarf Antelope
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Neotragus batesi
Name: Bates's Pygmy Antelope
Order: Artiodactyla
Habitat: Central Africa
Scientific name: Neotragus batesi
Name: Bats of Africa
Order: Chiroptera
Habitat: Various
Scientific name: Various, e.g. Pteropus, Hipposideros, Nycteris
Name: Baudin's Waxwing
Order: Passeriformes
Habitat: Boreal forests
Scientific name: Bombycilla garrulus
Name: Bawean Deer
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Axis kuhlii
Name: Bawean Warty Pig
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Sus blouchi
Name: Bay Bamboo Rat
Order: Rodentia
Habitat: South Asia
Scientific name: Cannomys badius
Name: Bay Cat
Order: Carnivora
Habitat: Forests of Borneo
Scientific name: Catopuma badia
Name: Bay Vole
Order: Rodentia
Habitat: USA
Scientific name: Microtus breweri
Name: Bayan Kara Sheep
Order: Artiodactyla
Habitat: Kazakhstan
Scientific name: Ovis ammon sairensis
Name: Beach Vole
Order: Rodentia
Habitat: USA
Scientific name: Microtus breweri
Name: Bear
Order: Carnivora
Habitat: Northern hemisphere
Scientific name: Ursidae, various species
Name: Bearded Pig
Order: Artiodactyla
Habitat: Forests of Southeast Asia
Scientific name: Sus barbatus
Name: Bearded Saki
Order: Primates
Habitat: South America
Scientific name: Chiropotes satanas
Name: Bearded Seal
Order: Carnivora
Habitat: Arctic
Scientific name: Erignathus barbatus
Name: Beaver
Order: Rodentia
Habitat: North America and Europe
Scientific name: Castor canadensis
Name: Beaver Mouse
Order: Rodentia
Habitat: North America
Scientific name: Lemmiscus curtatus
Name: Bechstein's Bat
Order: Chiroptera
Habitat: Temperate forests
Scientific name: Myotis bechsteinii
Name: Beira
Order: Artiodactyla
Habitat: Horn of Africa
Scientific name: Dorcatragus megalotis
Name: Beira Antelope
Order: Artiodactyla
Habitat: Horn of Africa
Scientific name: Dorcatragus megalotis
Name: Beira Gazelle
Order: Artiodactyla
Habitat: Arid regions
Scientific name: Dorcatragus megalotis
Name: Belding's Ground Squirrel
Order: Rodentia
Habitat: Western North America
Scientific name: Urocitellus beldingi
Name: Beluga Whale
Order: Cetacea
Habitat: Arctic and sub-Arctic waters
Scientific name: Delphinapterus leucas
Name: Bennett's Gazelle
Order: Artiodactyla
Habitat: Arid regions
Scientific name: Gazella bennettii
Name: Bennett's Wallaby
Order: Diprotodontia
Habitat: Australia
Scientific name: Macropus rufogriseus
Name: Berger's Beet-Eared Pig
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Potamochoerus porcus bergeranus
Name: Beveren Rabbit
Order: Lagomorpha
Habitat: Domestic
Scientific name: Oryctolagus cuniculus
Name: Bewick's Swan
Order: Anseriformes
Habitat: Wetlands
Scientific name: Cygnus bewickii
Name: Bielak's Owl
Order: Strigiformes
Habitat: Temperate forests
Scientific name: Strix bielawskii
Name: Bielorussian Wisent
Order: Artiodactyla
Habitat: Belarus
Scientific name: Bison bonasus
Name: Bignose Unicorn
Order: Artiodactyla
Habitat: Tropical forests
Scientific name: Elasmodontomys obliquidens
Name: Binturong
Order: Carnivora
Habitat: Tropical forests of Southeast Asia
Scientific name: Arctictis binturong
Name: Bison
Order: Artiodactyla
Habitat: North America
Scientific name: Bison bison
Name: Bitter Vole
Order: Rodentia
Habitat: Southwestern Europe
Scientific name: Arvicola sapidus
Name: Black Crested Gibbon
Order: Primates
Habitat: Southeast Asia
Scientific name: Nomascus concolor
Name: Black Howler Monkey
Order: Primates
Habitat: South America
Scientific name: Alouatta caraya
Name: Black Panther
Order: Carnivora
Habitat: Asia and Africa
Scientific name: Panthera pardus
Name: Black Rhinoceros
Order: Perissodactyla
Habitat: Africa
Scientific name: Diceros bicornis
Name: Black Spider Monkey
Order: Primates
Habitat: South America
Scientific name: Ateles paniscus
Name: Black Stilt
Order: Charadriiformes
Habitat: New Zealand
Scientific name: Himantopus novaezelandiae
Name: Black Tufted-Ear Marmoset
Order: Primates
Habitat: Brazil
Scientific name: Callithrix penicillata
Name: Black-Backed Jackal
Order: Carnivora
Habitat: Savannas and grasslands
Scientific name: Canis mesomelas
Name: Black-Capped Squirrel Monkey
Order: Primates
Habitat: Tropical forests
Scientific name: Saimiri boliviensis
Name: Black-Footed Cat
Order: Carnivora
Habitat: Southern Africa
Scientific name: Felis nigripes
Name: Black-Footed Ferret
Order: Carnivora
Habitat: Great Plains of North America
Scientific name: Mustela nigripes
Name: Black-Footed Mongoose
Order: Carnivora
Habitat: Tropical forests
Scientific name: Bdeogale nigripes
Name: Black-Handed Spider Monkey
Order: Primates
Habitat: Central America
Scientific name: Ateles geoffroyi
Name: Black-Headed Spider Monkey
Order: Primates
Habitat: Tropical forests
Scientific name: Ateles fusciceps
Name: Black-Striped Capuchin
Order: Primates
Habitat: Tropical forests
Scientific name: Cebus libidinosus
Name: Black-Tailed Deer
Order: Artiodactyla
Habitat: Western North America
Scientific name: Odocoileus hemionus
Name: Black-Tailed Gazelle
Order: Artiodactyla
Habitat: Savannas and grasslands
Scientific name: Gazella fulvorufula
Name: Black-Tailed Jackrabbit
Order: Lagomorpha
Habitat: North America
Scientific name: Lepus californicus
Name: Black-Tailed Prairie Dog
Order: Rodentia
Habitat: Great Plains of North America
Scientific name: Cynomys ludovicianus
Name: Blackbuck
Order: Artiodactyla
Habitat: India and Pakistan
Scientific name: Antilope cervicapra
Name: Blue Whale
Order: Cetacea
Habitat: Worldwide
Scientific name: Balaenoptera musculus
Name: Boar
Order: Artiodactyla
Habitat: Eurasia
Scientific name: Sus scrofa
Name: Bobcat
Order: Carnivora
Habitat: North America
Scientific name: Lynx rufus
Name: Bongo
Order: Artiodactyla
Habitat: Central Africa
Scientific name: Tragelaphus eurycerus
Name: Bonobo
Order: Primates
Habitat: Tropical forests of the Democratic Republic of the Congo
Scientific name: Pan paniscus
Name: Borneo Elephant
Order: Proboscidea
Habitat: Borneo
Scientific name: Elephas maximus borneensis
Name: Boto
Order: Cetacea
Habitat: Amazon River basin
Scientific name: Inia geoffrensis
Name: Bowhead Whale
Order: Cetacea
Habitat: Arctic
Scientific name: Balaena mysticetus
Name: Brown Bear
Order: Carnivora
Habitat: North America and Eurasia
Scientific name: Ursus arctos
Name: Brush-Tailed Porcupine
Order: Rodentia
Habitat: Southeast Asia
Scientific name: Atherurus africanus
Name: Bryde's Whale
Order: Cetacea
Habitat: Tropical and subtropical waters worldwide
Scientific name: Balaenoptera edeni
Name: Bushbaby
Order: Primates
Habitat: Africa
Scientific name: Galago, various species
Name: Bushbuck
Order: Artiodactyla
Habitat: Africa
Scientific name: Tragelaphus scriptus
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Babirusa | Artiodactyla | Tropical forests | Babyrousa |
| Babirussa | Artiodactyla | Tropical forests of Indonesia | Babyrousa |
| Bactrian Camel | Artiodactyla | Central Asia | Camelus bactrianus |
| Bactrian Mouse | Rodentia | Central Asia | Mus camptorrhinus |
| Badger | Carnivora | Temperate regions of Europe and Asia | Meles meles |
| Baiji | Cetacea | Yangtze River in China | Lipotes vexillifer |
| Baikal Seal | Carnivora | Lake Baikal | Pusa sibirica |
| Baillie's Pocket Gopher | Rodentia | Prairies and grasslands | Geomys bursarius |
| Baird's Beaked Whale | Cetacea | Deep ocean | Berardius bairdii |
| Baird's Dolphin | Cetacea | Pacific Ocean, off the coasts of Peru and Chile | Lagenorhynchus bairdi |
| Baird's Tapir | Perissodactyla | Central America | Tapirus bairdii |
| Bajing | Rodentia | Tropical forests | Callosciurus |
| Baker's Cane Rat | Rodentia | Savannas and grasslands | Thryonomys swinderianus |
| Bale Mountains Vervet | Primates | Afro-alpine moorlands | Chlorocebus djamdjamensis |
| Balinese Cat | Carnivora | Indonesia | Prionailurus bengalensis |
| Balkan Chamois | Artiodactyla | Southeastern Europe | Rupicapra rupicapra |
| Balkan Lynx | Carnivora | Balkan Peninsula | Lynx lynx balcanicus |
| Baluchistan Gazelle | Artiodactyla | Pakistan | Gazella subgutturosa erlangeri |
| Baluchistan Gerbil | Rodentia | Pakistan | Gerbillus nanus |
| Baluchistan Mouse-Eared Bat | Chiroptera | Pakistan | Myotis baluchistanicus |
| Baluchistan Wild Ass | Perissodactyla | Pakistan | Equus hemionus |
| Baluchistan Woodchuck | Rodentia | Pakistan | Marmota caudata |
| Banded Anteater | Dasyuromorphia | Australia | Myrmecobius fasciatus |
| Banded Cat | Carnivora | Indonesia | Prionailurus planiceps |
| Banded Flying Fox | Chiroptera | Indonesia | Pteropus bicolor |
| Banded Hare-Wallaby | Diprotodontia | Shrublands and grasslands | Lagostrophus fasciatus |
| Banded Linsang | Carnivora | Forests of Southeast Asia | Prionodon linsang |
| Banded Mongoose | Carnivora | Sub-Saharan Africa | Mungos mungo |
| Banded Mongoose Lemur | Primates | Madagascar | Lemur catta |
| Banded Palm Civet | Carnivora | Southeast Asia | Hemigalus derbyanus |
| Banded Pig-Tailed Langur | Primates | Tropical forests | Simias concolor |
| Banded Rock Wallaby | Diprotodontia | Rocky outcrops | Petrogale lateralis |
| Banded Serow | Artiodactyla | Tropical forests | Capricornis sumatraensis |
| Banded Surili | Primates | Tropical forests | Presbytis femoralis |
| Banded Tamarin | Primates | Tropical forests | Saguinus bicolor |
| Banded-Tailed Woolly Bat | Chiroptera | Southeast Asia | Kerivoula picta |
| Bantam Mouse | Rodentia | Indonesia | Mus fragilicauda |
| Banteng | Artiodactyla | Forests and grasslands of Southeast Asia | Bos javanicus |
| Baraba Squirrel | Rodentia | Boreal forests | Tamiasciurus sibiricus |
| Barasingha | Artiodactyla | India | Rucervus duvaucelii |
| Barbary Deer | Artiodactyla | North Africa | Cervus elaphus barbarus |
| Barbary Deer Mouse | Rodentia | Coastal California | Peromyscus californicus |
| Barbary Ground Squirrel | Rodentia | North Africa | Atlantoxerus getulus |
| Barbary Lion | Carnivora | North Africa | Panthera leo leo |
| Barbary Macaque | Primates | Atlas Mountains of North Africa | Macaca sylvanus |
| Barbary Mouse | Rodentia | Arid regions | Mus spretus |
| Barbary Red Deer | Artiodactyla | North Africa | Cervus elaphus barbarus |
| Barbary Sheep | Artiodactyla | North Africa | Ammotragus lervia |
| Barbary Shrew | Eulipotyphla | North Africa | Crocidura brachyura |
| Barbary Stag | Artiodactyla | Temperate forests | Cervus elaphus barbarus |
| Barbary Striped Grass Mouse | Rodentia | North Africa | Lemniscomys barbarus |
| Barbastelle | Chiroptera | Europe and Asia | Barbastella barbastellus |
| Barbastelle Bat | Chiroptera | Eurasia | Barbastella barbastellus |
| Bareen Gazelle | Artiodactyla | West Africa | Nanger dama |
| Baret's Sportive Lemur | Primates | Dry forests | Lepilemur bareyi |
| Baringo Giraffe | Artiodactyla | Kenya and Uganda | Giraffa camelopardalis rothschildi |
| Barka Giraffe | Artiodactyla | Northeastern Africa | Giraffa camelopardalis barkeri |
| Barkley's Short-Tailed Bat | Chiroptera | Central America | Carollia barkleyi |
| Barren Ground Caribou | Artiodactyla | Arctic regions of North America | Rangifer tarandus groenlandicus |
| Barren Ground Shrew | Eulipotyphla | North America | Sorex ugyunak |
| Barter Island Lemming | Rodentia | Alaska | Lemmus trimucronatus |
| Barter's Vole | Rodentia | China | Lasiopodomys bartelsii |
| Bartlett's Crab-Eating Rat | Rodentia | Indonesia | Vo oemlurns bartletti |
| Bartlett's Cuscus | Diprotodontia | Tropical forests | Phalanger bartletti |
| Basilan Wild Boar | Artiodactyla | Philippines | Sus ahoenobarbus |
| Basset Hound | Carnivora | Domestic | Canis lupus familiaris |
| Bat | Chiroptera | Worldwide | Various species |
| Bat-Eared Fox | Carnivora | Africa | Otocyon megalotis |
| Bates's Dwarf Antelope | Artiodactyla | Tropical forests | Neotragus batesi |
| Bates's Pygmy Antelope | Artiodactyla | Central Africa | Neotragus batesi |
| Bats of Africa | Chiroptera | Various | Various, e.g. Pteropus, Hipposideros, Nycteris |
| Baudin's Waxwing | Passeriformes | Boreal forests | Bombycilla garrulus |
| Bawean Deer | Artiodactyla | Tropical forests | Axis kuhlii |
| Bawean Warty Pig | Artiodactyla | Tropical forests | Sus blouchi |
| Bay Bamboo Rat | Rodentia | South Asia | Cannomys badius |
| Bay Cat | Carnivora | Forests of Borneo | Catopuma badia |
| Bay Vole | Rodentia | USA | Microtus breweri |
| Bayan Kara Sheep | Artiodactyla | Kazakhstan | Ovis ammon sairensis |
| Beach Vole | Rodentia | USA | Microtus breweri |
| Bear | Carnivora | Northern hemisphere | Ursidae, various species |
| Bearded Pig | Artiodactyla | Forests of Southeast Asia | Sus barbatus |
| Bearded Saki | Primates | South America | Chiropotes satanas |
| Bearded Seal | Carnivora | Arctic | Erignathus barbatus |
| Beaver | Rodentia | North America and Europe | Castor canadensis |
| Beaver Mouse | Rodentia | North America | Lemmiscus curtatus |
| Bechstein's Bat | Chiroptera | Temperate forests | Myotis bechsteinii |
| Beira | Artiodactyla | Horn of Africa | Dorcatragus megalotis |
| Beira Antelope | Artiodactyla | Horn of Africa | Dorcatragus megalotis |
| Beira Gazelle | Artiodactyla | Arid regions | Dorcatragus megalotis |
| Belding's Ground Squirrel | Rodentia | Western North America | Urocitellus beldingi |
| Beluga Whale | Cetacea | Arctic and sub-Arctic waters | Delphinapterus leucas |
| Bennett's Gazelle | Artiodactyla | Arid regions | Gazella bennettii |
| Bennett's Wallaby | Diprotodontia | Australia | Macropus rufogriseus |
| Berger's Beet-Eared Pig | Artiodactyla | Tropical forests | Potamochoerus porcus bergeranus |
| Beveren Rabbit | Lagomorpha | Domestic | Oryctolagus cuniculus |
| Bewick's Swan | Anseriformes | Wetlands | Cygnus bewickii |
| Bielak's Owl | Strigiformes | Temperate forests | Strix bielawskii |
| Bielorussian Wisent | Artiodactyla | Belarus | Bison bonasus |
| Bignose Unicorn | Artiodactyla | Tropical forests | Elasmodontomys obliquidens |
| Binturong | Carnivora | Tropical forests of Southeast Asia | Arctictis binturong |
| Bison | Artiodactyla | North America | Bison bison |
| Bitter Vole | Rodentia | Southwestern Europe | Arvicola sapidus |
| Black Crested Gibbon | Primates | Southeast Asia | Nomascus concolor |
| Black Howler Monkey | Primates | South America | Alouatta caraya |
| Black Panther | Carnivora | Asia and Africa | Panthera pardus |
| Black Rhinoceros | Perissodactyla | Africa | Diceros bicornis |
| Black Spider Monkey | Primates | South America | Ateles paniscus |
| Black Stilt | Charadriiformes | New Zealand | Himantopus novaezelandiae |
| Black Tufted-Ear Marmoset | Primates | Brazil | Callithrix penicillata |
| Black-Backed Jackal | Carnivora | Savannas and grasslands | Canis mesomelas |
| Black-Capped Squirrel Monkey | Primates | Tropical forests | Saimiri boliviensis |
| Black-Footed Cat | Carnivora | Southern Africa | Felis nigripes |
| Black-Footed Ferret | Carnivora | Great Plains of North America | Mustela nigripes |
| Black-Footed Mongoose | Carnivora | Tropical forests | Bdeogale nigripes |
| Black-Handed Spider Monkey | Primates | Central America | Ateles geoffroyi |
| Black-Headed Spider Monkey | Primates | Tropical forests | Ateles fusciceps |
| Black-Striped Capuchin | Primates | Tropical forests | Cebus libidinosus |
| Black-Tailed Deer | Artiodactyla | Western North America | Odocoileus hemionus |
| Black-Tailed Gazelle | Artiodactyla | Savannas and grasslands | Gazella fulvorufula |
| Black-Tailed Jackrabbit | Lagomorpha | North America | Lepus californicus |
| Black-Tailed Prairie Dog | Rodentia | Great Plains of North America | Cynomys ludovicianus |
| Blackbuck | Artiodactyla | India and Pakistan | Antilope cervicapra |
| Blue Whale | Cetacea | Worldwide | Balaenoptera musculus |
| Boar | Artiodactyla | Eurasia | Sus scrofa |
| Bobcat | Carnivora | North America | Lynx rufus |
| Bongo | Artiodactyla | Central Africa | Tragelaphus eurycerus |
| Bonobo | Primates | Tropical forests of the Democratic Republic of the Congo | Pan paniscus |
| Borneo Elephant | Proboscidea | Borneo | Elephas maximus borneensis |
| Boto | Cetacea | Amazon River basin | Inia geoffrensis |
| Bowhead Whale | Cetacea | Arctic | Balaena mysticetus |
| Brown Bear | Carnivora | North America and Eurasia | Ursus arctos |
| Brush-Tailed Porcupine | Rodentia | Southeast Asia | Atherurus africanus |
| Bryde's Whale | Cetacea | Tropical and subtropical waters worldwide | Balaenoptera edeni |
| Bushbaby | Primates | Africa | Galago, various species |
| Bushbuck | Artiodactyla | Africa | Tragelaphus scriptus |