Hyde and Hare (1955)

Hyde and Hare 1955 Bugs Bunny comes to a city park to be daily fed carrots by a meek, little man Bugs proposes that the man adopt him as a pet The man accepts and takes Bugs home, where he states he is a doctor and the name on his shingle is Dr Jekyll Unbeknownst to Bugs, Jekyll gives into the temptation to drink his potion that changes him into Mr Hyde Bugs keeps fleeing Hyde and running to the re transformed Jekyll for help, but behind Bugs back, Jekyll involuntarily changes back into Hyde Bugs helps himself to some of Jekylls potion before leaving to return to the park, where he changes into a shaggy, green rabbit that scares everyone away