Hippo and Thomas is a tV short anime that premiered in winter 1971.

About the production: there are 300 episodes of about 5 minutes and its current status is "finished".

Its main genres are comedy.

On AniList, Hippo and Thomas has an average score of 51%, an average score, and appears on 315 users' lists.

Thomas is a cunning bird who sponges on Hyppo, the good-natured hippopotamus. Although Thomas is a dependent, living in Hyppo's big mouth, he always acts lordly and tries to outsmart his simpleminded host. However, their basic friendship and cooperation endures despite their frequent quarrels. The two play a prime role in this comic series, short yet full of originality. (Source: Tatsunoko website)

Official synopsis from AniList.