CatDog is an American animated television series created by Peter Hannan for Nickelodeon. The series follows the zany hijinks of golden-furred conjoined brothers of different species, with one half of the resultant animal being a cat and the other a dog. Nickelodeon produced the series from Burbank, California. The first episode aired on April 4, 1998, following the 1998 Kids' Choice Awards, before the show officially premiered in October of that year. Similarly, the Season 2 episode "Fetch" was shown in theaters in 1998 before airing on television.
The series ended on June 15, 2005, after a total of four seasons and 66 aired episodes over seven years, plus two produced episodes never aired. It was produced by Nickelodeon Animation Studio and Peter Hannan Productions, and was released on DVD in Region 1 by Shout! Factory.
Two animation studios, Saerom Animation and Rough Draft Studios through Rough Draft Korea, worked on the animation for the show.