Description:  The Mumbly Cartoon Show is a 1976 Hanna-Barbera animated series about a scruffy dog detective named Mumbly who wears a trench coat and is partnered with his boss, Chief Schnooker. Voiced by Don Messick, the canine detective uses his wits and a beat-up car to solve crimes, often with Schnooker (John Stephenson) taking credit for the arrests. The show was a segment of The Tom & Jerry/Grape Ape/Mumbly Show on ABC and produced 16 episodes for its single season.

Protagonist: Mumbly, a dog detective voiced by Don Messick, who wears a trench coat and snickers at misfortune.

Partner: Chief Schnooker, Mumbly's boss, who is voiced by John Stephenson and often takes credit for Mumbly's work.

Plot: Mumbly and Schnooker work to catch criminals, who frequently have alliterative names.

Inspiration: The character's design was changed from the earlier "Muttley" to avoid a legal dispute, and his persona was inspired by the TV detective character Columbo.