A Ham in a Role (1949)

A Ham in a Role is a Looney Tunes short starring the Goofy Gophers along with an unnamed dog who is based on John Barrymore. The cartoon, released in December 1949, was directed by Robert McKimson and released by Warner Bros. Pictures. The cartoon draws heavily from the works of William Shakespeare, with its gags relying on literal interpretations of lines from Hamlet, Julius Caesar, Richard III, and Romeo and Juliet.

More at Wikipedia.