Quackor the Fowl is the second part of episode 1 in season 2 of Dexter's Laboratory. It aired on July 16, 1997. In this episode, Mandark and Dexter take their lab animals to show and tell, only for Monkey and Quackor to get involved in a brawl beforehand.
This episode is often mistaken for a Dial M for Monkey episode because the title card had its music playing during it and the episode revolved around Monkey, but it was confirmed that this is really a Dexter's Laboratory episode.
During the episode clips from the original opening for Dial M for Monkey is used
The events of this episode are referenced to and continue in the episode "A Quackor Cartoon".
When Quackor changed back into her normal form and flew away, Monkey looked at her with a shocked look. This may have been foreshadowing him falling in love with her in the episode A Quackor Cartoon.