Looney Tunes: Volume Two Season 1 Episode 45

A flea befriends a horsefly, who has hooves like those of a horse, and rides the horsefly into the hair of a dog. The flea chops down strands of the dog's hair to use as "logs" with which to build a cabin, unaware that the dog's coat is the sacred territory of a tribe of Indian fleas, who declare war on the interlopers