What cartoon is about a dog and fleas that lived in his tail? - briefly
The cartoon you're referring to is called "The Flea Circus" (La Troupe du Roi) from the Hanna-Barbera series. It features a dog named Rex and a group of fleas that live in his tail, often causing mischief and mayhem.
What cartoon is about a dog and fleas that lived in his tail? - in detail
The animated series you are referring to is likely "The Flea Circus" by Terry Gilliam, which was broadcast as part of "Monty Python's Flying Circus." This surreal comedy sketch features a dog named Eric whose tail serves as the venue for an unusual flea circus. In this bizarre and humorous setting, the fleas perform various acts, taking advantage of Eric's tail as their stage. The sketch is known for its absurdist humor and unique animation style, which was a hallmark of Terry Gilliam's work during that time.