Aardvark 
Aardwolf 
Abbott's Day Gecko 
Abdim's stork 
Aberts squirrel 
Abyssinian Ground Hornbill 
Abyssinian roller 
Acacia pied barbet 
Acadian flycatcher 
Acanthosaura cardamomensis 
Acanthosaura crucigera 
Acanthurus nigricauda 
Achilles tang 
Acorn Woodpecker 
Addax 
Adélie penguin 
Admiralty Island cuscus 
Aesculapian snake 
Afghan Pika 
African barred owlet 
African black duck 
African black swift 
African blue tit 
African broadbill