8. CatDog
CatDog was the Cow and Chicken of Nickelodeon. The show followed conjoined brothers who for some reason were cat and dog. They may share the same body but their personalities could not be more different. Cat is the more refined and cultured of the two whereas Dog loves nothing more than heavy metal and chasing garbage trucks. As you can tell it is often Dog who starts off the adventures they get up to due to his nature though when Cat has enough of this- he snaps and has a raging temper which is enough to put fear main antagonists of the series- The Greaser Dogs. One thing the show always left me thinking about was how they actually went to the toilet too...