Legally, the only place I know of to watch it is by buying an episode off of iTunes. They have a lot of 'vintage' Nickelodeon Cartoons for sale, including CatDog, Doug, Rugrats, and Hey Arnold.
You can watch episodes of the show CatDog on youtube.
www.youtube.com/user/iamanerd
This question is answered according to your opinion. Many who have watched CatDog as a child do favour it as an "awesome" show. Though individuals opinion vary; if you were to watch CatDog as an adult you may think it is immature; but it is up to the individuals' choice and preferrence.
CatDog - 1998 The House of CatDog CatDog Campers 2-13 was released on: USA: 28 July 1999
CatDog - 1998 CatDog's End Siege on Fort CatDog 1-12 was released on: USA: 19 October 1998
One fine day with a woof and a purr A baby was born and it cause a little stir No blue bug No three-eyed frog Just a feline canine little catdog CatDog CatDog Alone in the world was a little catdog Out on the road or back in town All the little critters put catdog down Trying to be brothers Trying to get along Trying to walk together Trying to sing this song CatDog CatDog Alone in the world was a little CatDog CatDog CatDog Alone in the world was a little CatDog Alone in the world was a little CatDog
The duration of CatDog is -1380.0 seconds.
Yes, Catdog is a classic Nicktoon.
CatDog was created on 1998-04-04.
CatDog - 1998 A Very CatDog Christmas 2-22 was released on: USA: 30 November 1999
CatDog - 1998 CatDog and the Great Parent Mystery - 3.2 was released on: USA: 25 November 2000
Of Course CatDog is a good show for all ages. CatDog is a family friendly show.