- autophagous
- avocet
- badger
- bag
- bald-coot
- baldicoot
- balky
- balm-cricket
- bandfish
- bandicoot
- basilisk
- bat
- barnacle goose
- bee-eater
- barb
- barbel
- barbet
- barn-owl
- barnacle
- barracuda
- bass
- beaver
- bee
- beetle
- bernicle goose
- biped
- bipedal
- bittern
- black cap
- black-beetle
- blackbird
- bleak
- blight
- bonito
- booby gannet
- bottle-head
- box-wallah
- boxer
- boxfish
- boa
- bobcat
- body weight
- boomer
- borer
- bottle-nose
- brachiosaurus
- branchia
- branchiae
- browse
- brock
- bubal
- bumble-bee
- bullhead
- bunting
- burbot
- brambling
- brant
- breeder
- brent
- brill
- brachiopod
- brant-goose
- brent-goose
- bristletail
- bullet-mackerel
- bullfinch
- bustard
- cachalot
- cancroid
- caducibranchiate
- calamary
- camelopard
- caesio
- caiman
- cantharid
- capercailze
- caracal
- capelin
- capercailye
- caplin
- capuchin
- carabid
- cardinal-beetle
- cardinal-bird
- cariama
- cariboo caribou
- carnivora
- carnivore
- carp
- cassowary
- cat
- catamountain
- caudal
- cayman
- catarrhine
- caudate
- cavalla
- cavicorne
- cephalopod
- cephalothorax