(Eight-) Striped Kukri Snake 
24-spot ladybird 
Aades cultratus 
Aaptos suberitoides 
Aardvark 
Aardwolf 
Abacena accincta 
Abachrysa 
Abaciscus shaneae 
Abaeis salome jamapa 
Abana horvathi 
Abantiades labyrinthicus 
Abax parallelepipedus 
Abbot's Bagworm Moth 
Abbott's Day Gecko 
Abbreviated Button Slug 
Abdim's stork 
Abdopus aculeatus 
Aberdare cisticola 
Abert's Towhee 
Aberts squirrel 
Abisara geza 
Abisara neavei 
Abispa splendida