Bornean clouded leopard 
Bornean mountain ground squirrel 
Bornean orangutan 
Borneo black-banded squirrel 
Borneo elephant 
Botta's pocket gopher 
Brazilian porcupine 
Brown Agouti 
Brown antechinus 
Brown Bear 
Brown dorcopsis 
Brown fur seal 
Brown Greater Galago 
Brown howler 
Brown hyena 
Brown mouse lemur 
Brown rat 
Brown woolly monkey 
Brown-throated sloth 
Brush-tailed rock-wallaby 
Bukharan Markhor 
Burchells zebra 
Burnished saki 
Buru Babirusa