Screwy and Sammy Squirrel

Screwy Squirrel is a cartoon character, an anthropomorphic squirrel created by Tex Avery for Metro-Goldwyn-Mayer, generally considered the wackiest of the screwball cartoon characters of the 1940s, which included Warner Bros.'s Bugs Bunny and Daffy Duck, Disney's Donald Duck and Aracuan Bird, Terrytoon's Heckle and Jeckle and Walter Lantz's Woody Woodpecker. Screwy, who goes by Screwball, is a red squirrel who can do almost anything to almost anyone: he pulls objects out of thin air, double himself, and constantly breaks the fourth wall while uttering a characteristic cackling laugh, which sounded as "Ha-ha-ha-ha-ha-ha-ha-ha!" He gets a chase between himself and a simple but agitated bird dog called Meathead.
Screwy also has another squirrel named Sammy the gray squirrel and they are both voiced by Wally Maher.