Nickelodeon is a television network owned by MTV Networks Kids & Family Group, a division of Viacom. It ran shows aimed usually children, with shows such as SpongeBob SquarePants, The Fairly OddParents, and Dora the Explorer.
The network is the broadcaster of CatDog during its run from 1998 to 2005. After the series ended it was seen in Nicktoons Network with previously unaired episodes finally debuting in the United States showings. In 2013, the show was moved to the TeenNick late-night block The Splat (Formerly "The 90s Are All That") where it is currently seen. In other countries CatDog remains to be seen in Nickelodeon.