Anils bush frog 
Anischys luteovarius 
Anise Swallowtail 
Anisocentropus magnificus 
Anisodactylus sanctaecrucis 
Anisodes prunelliaria 
Anisogona similana 
Anisomorpha buprestoides 
Anisoneura aluco 
Anisoneura salebrosa 
Anisoplia baetica 
Anisosticta novemdecimpunctata 
Anisotoma humeralis 
Anja Day Gecko 
Anja Half-padded Gecko 
Ankafana Bright-eyed Frog 
Ankale concordens 
Anker's whip coral shrimp 
Anna Tiger Moth 
Anna's Blue 
Anna's Chromodoris 
Annas eighty-eight 
Annas hummingbird 
Annobon dwarf gecko