- Babirusa
- Baboon
- Bactrian
- Badger
- Bagworm
- Baiji
- Bald eagle
- Baleen whale
- Balloonfish
- Bandicoot
- Banteng
- Barasinga
- Barasingha
- Barb
- Barbet
- Barnacle
- Barracuda
- Basilisk
- Bass
- Basset hound
- Bat
- Beagle
- Bear
- Bearded dragon
- Beaver
- Bee
- Beetle
- Bell frog
- Beluga whale
- Bettong
- Big-horned sheep
- Bighorn
- Bilby
- Binturong
- Bird
- Bird of Paradise
- Bison
- Bittern
- Black Bear
- Black fly
- Black panther
- Black rhino
- Black widow spider
- Blackbird
- Blackbuck
- Blesbok
- Blowfish
- Blue jay
- Blue whale
- Bluebird
- Bluebottle
- Bluefish
- Boa
- Boa constrictor
- Boar
- Bobcat
- Bobolink
- Bobwhite
- Bongo
- Booby
- Boto
- Boubou
- Boutu
- Bovine
- Brahman bull
- Brahman cow
- Brant
- Bream
- Brocket deer
- Bronco
- Brontosaurus
- Brown Bear
- Bubblefish
- Buck
- Budgie
- Bufeo
- Buffalo
- Bufflehead
- Bug
- Bull mastiff
- Bullfrog
- Bumblebee
- Bunny
- Bunting
- Burro
- Bush Baby
- Bush squeaker
- Bustard
- Butterfly
- Buzzard
|