The Angry Beavers - Season 3 Episode 3 Omega Beaver
Overview: Daggett gets taken in by EC comics books' "The Konspiracy Komiks Presents: The Attack of the Howler Leeches" and sends away for the Konspiracy Kevin head doll. When Dag pulls the string, the head warns him that all animals will be attacked by the Alien Howler Leeches. He panics while Norbert thinks he's been scammed. Dag persists in his paranoia, so Norb recruits Big Rabbit, Barry the Bear, and Truckie to justify his fears.