Animal Lists
- Aardwolf
- Abyssinian
- Abyssinian Guinea Pig
- Acadian Flycatcher
- Ackie Monitor
- Addax
- Adelie Penguin
- Admiral Butterfly
- Aesculapian Snake
- Affenpinscher
- Afghan Hound
- African Bullfrog
- African Bush Elephant
- African Civet
- African Clawed Frog
- African Fish Eagle
- African Forest Elephant
- African Golden Cat
- African Grey Parrot
- African Jacana
- African Palm Civet
- African Penguin
- African Sugarcane Borer
- African Tree Toad
- African Wild Dog
- Africanized bee (killer bee)
- Agama Lizard
- Agkistrodon Contortrix
- Agouti
- Aidi
- Airedoodle
- Akbash
- Akita
- Akita Shepherd
- Alaskan Husky
- Alaskan Klee Kai
- Aldabra Giant Tortoise
- Alligator Gar
- Alpaca
- Alpine Dachsbracke
- Alpine Goat
- Alusky
- Amano Shrimp
- Amargasaurus
- Amazon Parrot
- Amazon Tree Boa
- Amazonian Royal Flycatcher
- Amberjack
- Ambrosia Beetle
- American Alligator
- American Alsatian
- American Bulldog
- American Bully
- American Cocker Spaniel
- American Cockroach
- American Coonhound
- American Dog Tick
- American Eel
- American Eskimo Dog
- American Foxhound
- American Hairless Terrier
- American Leopard Hound
- American Pit Bull Terrier
- American Pygmy Goat
- American Robin
- American Staffordshire Terrier
- American Toad
- American Water Spaniel
- American Wirehair
- Amethystine Python
- Amur Leopard
- Anaconda
- Anatolian Shepherd Dog
- Anchovies
- Andrewsarchus
- Angelfish
- Angelshark
- Anglerfish
- Angora Ferret
- Angora Goat
- Anhinga
- Animal Lists
- Animals
- Anna’s Hummingbird
- Anole Lizard
- Anomalocaris
- Ant
- Anteater
- Antelope
- Antiguan Racer Snake
- Apennine Wolf
- Appenzeller Dog
- Apple Head Chihuahua
- Apple Moth
- Arabian Cobra
- Arabian Wolf
- Arafura File Snake
- Arambourgiania
- Arapaima
- archerfish
