Question: In 1991, The Ren & Stimpy Show was one of Nickelodeon's original three Nicktoons series along with Doug and which other show?

<P0-S0> Ren and Stimpy, created by John Kricfalusi, are the title characters in the American-Canadian animated television series "The Ren & Stimpy Show". <P0-S1>  Kricfalusi created the characters during his stay in Sheridan College and they first appeared on film in the pilot episode "Big House Blues". <P0-S2>  Ren is a scrawny, violently psychotic Chihuahua, and Stimpy is a fat, stupid cat. <P0-S3>  They are often at odds with each other on the show, though they do share moments of closeness together. <SEP> <P1-S0> The Ren & Stimpy Show is an American animated series created by John Kricfalusi for Nickelodeon. <P1-S1>  The series follows the adventures of title characters Ren, an emotionally unstable chihuahua, and Stimpy, a good-natured, dimwitted cat. <P1-S2>  It premiered on August 11, 1991 as one of the original three Nicktoons, along with "Rugrats" and "Doug". <P1-S3>  Throughout its run, the show was controversial for its off-color humor, sexual innuendo, dark humor, adult jokes, and violence. <P1-S4>  This controversy contributed to the production staff's altercations with Nickelodeon's Standards and Practices department. <P1-S5>  The show ended on December 16, 1996, with a total of five seasons and 52 episodes. <SEP> <P2-S0> This is a list of episodes of the animated series "The Ren & Stimpy Show". <P2-S1>  The show premiered on Nickelodeon on August 11, 1991 directly following the premieres of "Doug" and "Rugrats", and it ran for five seasons until December 16, 1995, with the finale "A Scooter for Yaksmas". <P2-S2>  The series initially had no consistent grouping of segments into episodes; episodes and interstitial segments aired out of production order, some episodes and interstitials were produced for one season and aired in another, and two episodes, "Man's Best Friend" and "Sammy and Me / The Last Temptation", did not air in the series' original run at all. <P2-S3>  Instead, "Man's Best Friend" aired on the "Ren & Stimpy Adult Party Cartoon" for Spike in 2003 alongside the original show's pilot, "Big House Blues", uncut, and "Sammy and Me / The Last Temptation" aired on October 20, 1996 on MTV. <SEP> <P3-S0> Nicktoons MLB is a baseball game released for the Xbox 360, Wii, Nintendo DS, and Nintendo 3DS. <P3-S1>  The game was developed by High Voltage Software and published by 2K Play. <P3-S2>  It features playable characters from Nickelodeon shows including "SpongeBob SquarePants", "Invader Zim", "The Ren & Stimpy Show", "Danny Phantom", "Planet Sheen", "", "Fanboy & Chum Chum", "T.U.F.F. Puppy", and two characters that only appear in the 3DS version, one which is from "", and the other from the Nickelodeon game "Monkey Quest". <P3-S3>  Characters from "Rugrats", "Rocko's Modern Life", "Aaahh!!! <P3-S4>  Real Monsters", "Hey Arnold! <P3-S5> ", "The Angry Beavers", "CatDog", "", "Back at the Barnyard", and "The Mighty B! <P3-S6> " make cameo appearances in the game's loading screens. <P3-S7>  In addition to Nickelodeon characters, the game also features players from real Major League Baseball teams.