Ninpen Manmaru
Japanese title: 忍ペンまん丸
Alternative titles: Manmaru the Ninja Penguin
Type: TV
Source: Manga
Episodes: 30
Status: Finished Airing
Aired: Jul 5, 1997 to Mar 28, 1998
Broadcast: Saturdays at 18:00 (JST)
Duration: 24 min per ep
Rating: G - All Ages
Studios: Shin-Ei Animation
Genres: Comedy
Themes: Anthropomorphic, Samurai
Demographics: Shounen

Manmaru goes to ninja school at Nenga, where foxes and raccoons study the art of assassination under a bear ninja master. He is soon thrown in to local rivalry between the Nenga school, the Koga (monkeys), and the Iga (dogs), as well as facing temptations from the Dobe, a group of dropouts from the Nenga.

(Source: The Anime Encyclopedia)