Arabian red fox 
Arabian sand gazelle 
Arabian tahr 
Araguaian river dolphin 
Arctic fox 
arctic ground squirrel 
Arctic shrew 
Arctic wolf 
Arizona gray squirrel 
Asian black bear 
Asian elephant 
Asian Mouflon 
Asian palm civet 
Asian Red-cheeked Squirrel 
Asian small-clawed otter 
Asiatic Cheetah 
Asiatic lion 
Assam macaque 
Atlantic spotted dolphin 
Atlantic titi 
Australian fur seal 
Australian sea lion 
Axis deer 
Aye-aye