Golden Yeggs (1950)
Golden Yeggs is a 1950 Merrie Melodies short animated film, released on August 5, 1950 by Warner Bros. Cartoons, Inc. and directed by Friz Freleng. It features Daffy Duck and Porky Pig in a forerunner of the Rocky and Mugsy cartoons, with Rocky already in his present-day form.
More at Wikipedia.