Arctic shrew 
Arctic tern 
Arctic wolf 
Arctornis micacea 
Arctornis rutila 
Arctornis tortricoides 
Arcyptera fusca 
Ardeadoris cruenta 
Ardonea tenebrosa 
Ardys Crescent 
Areas galactina 
Arenocoris waltlii 
Areolate grouper 
Areolate Woodwasp 
Aretaon asperimus 
Arethusana 
Arfak Astrapia 
Arfak honeyeater 
Arfak Robin 
Arfakiana tree frog 
Arge moth 
Arge similis 
Argentine ant 
Argentine Black and White Tegu