Kagu
Kai Ken
Kakapo
Kaluga Sturgeon
Kamehameha Butterfly
Kangal Shepherd Dog
Kangaroo
Kangaroo Mouse
Kangaroo Rat
Katydid
Kaua’i ‘Ō‘ō
Kea
Keagle
Keel-Billed Toucan
Keelback
Keeshond
Kelp Greenling
Kentucky Warbler
Kenyan Sand Boa
Kermode Bear (Spirit Bear)
Kerry Blue Terrier
Kestrel
Keta Salmon
Key Deer
Keyhole Cichlid
Khao Manee
Khapra Beetle
Kiang
Kiko Goat
Killdeer
Killer Clown Ball Python
Killer Whale
Killifish
Kinabalu Giant Red Leech
Kinder Goat
King Cobra
King Crab
King Eider
King Mackerel
King Penguin
King Quail
King Rat Snake
King Salmon
King Shepherd: Loyal, Gentle Giants with a Protective Heart
King Snake
King Vulture
Kingfisher
Kingklip
Kinkajou
Kirtland’s Snake
Kishu
Kissing Bugs
Kissing Gourami
Kit Fox
Kitefin Shark
Kiwi
Klipspringer
Knifefish
Knight Anole
Koala
Kodiak Bear
Kodkod
Koi Fish
Kokanee Salmon
Komodo Dragon
Komondor
Kooikerhondje
Koolie
Korean Jindo
Kori Bustard
Kouprey
Kowari
Krait
Krill
Kudu
Kudzu Bug
Kuvasz