Aardvark
Aardwolf
Addax
Adélie Penguin
Acadian Flycatcher
African Elephant
African Fish Eagle
African Jacana
African Wild Dog
Allen's Hummingbird
Alligator Gar
Alligator Snapping Turtle
Alpaca
Alpine Ibex
Alpine Marmot
Amazon Horned Frog
American Alligator
American Beaver
American Bison
American Bullfrog
American Coot
American Crocodile
American Crow
American Kestrel
American Robin
Anaconda
Andean Condor
Andean Flicker
Angelfish
Angler Fish
Ant
Anteater
Arapaima
Archaeopteryx.
Arctic Fox
Arctic Hare
Arctic Skua
Arctic Tern
Argentine Horned Frog
Armadillo
Armoured Ground Cricket
Armoured Millipede
Army Ant
Asian Elephant
Asian Lion
Atlantic Bluefin Tuna
Atlantic Salmon
Australian Frilled Lizard
Aye-aye