Bonobono

"Bonobono" is a Japanese four-panel comic strip series by Mikio Igarashi, and also the name of the main character, a sea otter. It is also a television animation and animated film based on the four-panel comic strip. The title "Bonobono" is derived from "honobono" (meaning heartwarming or peaceful) with dakuten (voiced sound mark) added.

Source: Wikipedia