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 and the Dinosaur been tricked, it backtracks towards Daffy but ends up hitting Fido. Fido proceeds to perform a dazed dance. Daffy snatches Casper's slingshot and tricks Casper into thinking that swimming is not allowed to prevent him from pursuing him. Subsequently, Casper and Fido leave, but Daffy, knowing that Casper won't give up, paints himself on a nearby stone. Casper, holding a stone club, sees the painting and bashes it, but the force backfires and makes Casper dizzy. Daffy gives Casper a glass of water, which cures the dizziness and earns him Casper's trust. Daffy, however, gives Casper a card advertising a