This is Mooch of the old Hanna Barbera show The Biskitts. Another part of the request by ShadowLegoinnaire
The Biskitts are a group of tiny anthropomorphic dogs who live on Biskitt Island and are committed to guarding the crown jewels of Biskitt Castle. Modeled after Robin Hood, the Biskitts still serve their recently deceased king while performing good deeds for the underprivileged inhabitants of their tiny island. It is explained in the opening narration that due to their good reputation for responsibility and security, other kings have entrusted their treasures to be safeguarded by the Biskitts. The villain of the series is the king's mean-spirited, wasteful, younger brother King Max who rules the neighboring Lower Suburbia. In lieu of a proper coronation, Max constantly schemes to steal the royal treasure with the help of his hench-hounds Fang & Snarl and his jester Shecky. The Biskitts are also in danger of being captured and eaten by a large wildcat named Scratch.
Mooch: Mooch is always with the Biskitts and he loves to eat. He is voiced by Marshall Efron.