Screwball Squirrel (1944, animated short)

The first Screwy Squirrel animated cartoon directed by Tex Avery for Metro-Goldwyn-Mayer. Screwball Squirrel opens with the famous scene where the protagonist mocks a Disney-like cartoon squirrel and sends him packing. Story by Heck Allen.
Among the most outrageous cartoon characters ever created, Screwy can do almost anything to almost anyone: he pulls objects out of thin air, doubles himself, and constantly breaks the fourth wall, all the while uttering a characteristic cackling laugh. He is generally considered the wackiest and outright most antagonistic of the screwball cartoon characters of the 1940s.
Voice cast:
Wally Maher as Screwy Squirrel
Dick Nelson as Meathead Dog