Manga: Damekko Doubutsu

Originally a manga series by Noriko Kuwata, Damekko Doubutsu (literally "Useless Animals") is an anime series of 26 episodes, each only five minutes or so in duration. The series focuses on a timid wolf named Uruno, who stumbles into a forest one day on the brink of starvation. He soon encounters an aggressive, chain-smoking rabbit named Usahara, along with many other animals with no special talents who do not meet the expectations of how their species should behave.
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