Abah river flying frog
African blue-banded swallowtail
African elephant
African hunting dog
African painted dog
African sacred ibis
American buffalo
American horseshoe crab
American scoter
Amur tiger
angler fish
anglerfish
apple snail
arctic skua
Ardi
Arfak parotia
arrow flying squirrel
arrow poison frog
asbestos
Asian hornet
Asian tapir
Asian tri-colored squirrel
Asiatic black bear
asteriated quartz
Atlantic bottlenose dolphin
auroch
autumn hawkbit
aventurine
aardvark
aardwolf
African bush elephant
African chameleon
African darter
African fish eagle
African flower mantis
African penguin
African red clawed scorpion
African rice
African spurred tortoise
African wild dog
agami heron
agate
ailanthus silkmoth
albacore
Albany pitcher plant
albite cat’s-eye
Aldabra giant tortoise
Alexandrian senna
alexandrite
almond
alpaca
Alpine ibex
Alpine marmot
Altamira oriole
Amazon molly
Amazon waterlily
Amazonian motmot
amazonite
American alligator
American bison
American bullfrog
American cockroach
American flamingo
American lobster
American red squirrel
amethyst
ametrine
ammonite
amphibian
Amur leopard
anancus
Anarosaurus
andalusite
angel's trumpets
angler
Angolan free-tailed bat
anhinga
annual honesty
anoa
Antillean fruit-eating bat
apatite
apple snails
Arabian coffee
aragonite
arapaima
archaeocyathid sponge
archaeopteryx
arctic tern
Arfak astrapia
ashy drongo
Asian black bear
Asian elephant
Asian rice
Asian small-clawed otter
Asiatic wild ass
Aspidella
Atlantic bluefin tuna
Atlantic cod
Atlantic herring
Atlantic horseshoe crab
Atlantic John Dory
Atlantic puffin
Atlantic salmon
Atlantic sturgeon
Atlantic white-sided dolphin
Atlantic wolffish
Atlas beetle
Australian ringneck
Australian trumpet
aye-aye
azure seastar
azurite