Based on a series of illustrated children's books. (Source: AniDB)
Adelie
Leroy
Usao
Badger Dad
Badger Mom
Cassowary Chick
Cassowary Dad
Cecilia
Chinstrap
Crabeater Seal
Diplo
Emperor Baby
Emperor Big Sister
Emperor Dad
Gentoo
Grandpa Adelie
Gurara
Jason
Killer Whale A
Killer Whale B
Kuka
Latte
Leroy's Little Brother
Leroy's Mom
Mogumogu
Pass
Pla
Raccoon Dog
South Polar Skua
Tsukiko
Tsukiko's Mom
Tsukiko's Poop
Usagizaki-senpai
Usao's Mom
Wanda
