
1) Animated duo 2) Fictional dog 3) Fictional hybrid
Found on
https://www.crosswordclues.com/clue/catdog

The series ran until June 15, 2005. Toward the end of its run, a made-for-TV film was released, titled CatDog: The Great Parent Mystery. Reruns were played on Nicktoons from 2002 to 2011 and then on TeenNick as part of The `90s Are All That block since March 2013. The series is produced by Nickelodeon Animation Studio and Peter Hannan Productions....
Found on
http://en.wikipedia.org/wiki/CatDog
No exact match found.