Prehistoric Porky (1940)

Caveman Porky awakens and plays with his pet Rover, a massive dinosaur. After Rover's playfulness causes a disruption to the prehistoric peace and quiet, Porky's copy of "Expire" magazine arrives in the mail, filled with ads for fashionable new bearskins. Porky decides to go out and get himself a new suit, and sets off with his trusty club.