<P> The Ren & Stimpy Show is an American animated series created by John Kricfalusi for Nickelodeon . The series follows the adventures of title characters Ren, an emotionally unstable chihuahua, and Stimpy, a good - natured, dimwitted cat . It premiered on August 11, 1991, as one of the original three Nicktoons, along with Rugrats and Doug . Throughout its run, the show was controversial for its off - color humor, sexual innuendo, dark humor, adult jokes, and violence . This controversy contributed to the production staff's altercations with Nickelodeon's Standards and Practices department . The show ended on December 16, 1995, with a total of five seasons and 52 episodes . </P> <P> Ren & Stimpy received mixed to very positive reviews during its original run . It would go on to receive widespread critical acclaim after its run, and has since developed a cult following and had a long - lasting influence on television animation . A spin - off for adult audiences, Ren & Stimpy "Adult Party Cartoon", aired in 2003 on Spike, but was taken off the air along with the rest of Spike's animation block after three episodes . </P> <P> The series centers on Ren Höek (voiced by John Kricfalusi in seasons 1--2; Billy West in seasons 3--5), a short - tempered, "asthma - hound" Chihuahua, and Stimpson J. "Stimpy" Cat (also voiced by Billy West), a 3 - year - old dimwitted and happy - go - lucky cat . The duo fill various roles from episode to episode, including outer - space explorers, Old West horse thieves, and nature - show hosts, and are usually at odds with each other in these situations . While the show was sometimes set in the present day, the show's crew tended to avoid "contemporary" jokes about current events . The show extensively features off - color and absurdist humor, and slapstick . </P> <P> The show features a host of supporting characters . Some appear only in one episode, while others recur and occasionally appear in different roles . They may either be part of the storyline, or make cameo appearances with little bearing on the plot . Some, such as Mr. Horse, are exclusively cameo - based, spontaneously appearing as a running gag . </P>

Who does the voices of ren and stimpy
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