Joseph Barbera and Hanna worked alongside animator Tex Avery, who had created Daffy Duck and Bugs Bunny for Warner Bros. and directed "Droopy" cartoons at MGM. In 1940, Hanna and Barbera jointly directed "Puss Gets the Boot", which was nominated for an Academy Award for Best (Cartoon) Short Subject. The studio wanted a diversified cartoon portfolio, so despite the success of "Puss Gets the Boot", Barbera and Hanna's supervisor, Fred Quimby, did not want to produce more cat and mouse cartoons believing that there were already enough cartoons of those in existence. Surprised by the success of "Puss Gets the Boot", Barbera
Daffy Duck of the few unarguable masterpieces of American animation" according to Schneider. In the episode, Daffy is plagued by a godlike animator whose malicious paintbrush alters the setting, soundtrack, and even Daffy. When Daffy demands to know who is responsible for the changes, the camera pulls back to reveal none other than Bugs Bunny. "Duck Amuck" is widely heralded as a classic of filmmaking for its illustration that a character's personality can be recognized independently of appearance, setting, voice, and plot. In 1999, the short was selected for preservation in the United States National Film Registry. When the Warner Bros. animation