Quackodile Tears (1962)

Daffy Duck is ordered by his loudmouthed wife to sit on their egg in a nest When Daffy adjusts the nest to make it more comfortable the egg rolls away from him and into a crocodile hatchery where it is indistinguishable from all the other eggs When Daffy picks what he think is his egg from the crocodile hatchery a male crocodile gives chase and does battle with Daffy for the egg