Dog City (1992)

Ace Hart is a private eye in Dog City, where all the characters are dogs, everyone is a wisecracker, and every canine pun ever thought of is used liberally. Most of his cases lead him to Bugsy, the Dogfather, and his hapless minions. Meanwhile, he discusses his cases and all manner of cartoon cliches with Elliott, his Muppet creator in the real world. As Elliott rushes to complete his stories through numerous distractions and within deadline, Ace regularly finds himself yanked between divergent storylines and impossibly-convenient plot threads.