Dexter's Laboratory (1996)
S2E2 Quackor The Fowl
Episode Overview
Mandark is oblivious to the fact that his pet duck is actually Quackor the Fowl, a rival of Monkey. One night, Quackor hears Mandark mumbling in his sleep about plans to take down Dexter's lab, and he decides to act on it. However, he remains unaware that Monkey is Dexter's beloved pet, setting the stage for a comical misunderstanding.