Horace Horsecollar is an animated character created by both Ub Iwerks and Walt Disney. He is an anthropomorphic horse, one of Mickey Mouse's best friends and the boyfriend of Clarabelle Cow. Horace first appeared as Mickey's plough horse in the 1929 cartoon The Plowboy. He next appeared later that same year in The Jazz Fool and after that he became a regular member of the Disney supporting cast, along with Clarabelle Cow, Clara Cluck and others even more minor. Characterized as a cheerful know-it-all, Horace helped Mickey on his sleuthing expeditions in the comics before Goofy assumed that role.