Overview:During a field trip, Lisa discovers desert water that makes usually combative creatures get along; after getting kicked out of the retirement home, Grampa comes to live with the family.
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First Air Date: Dec 17, 1989Last Air date: Oct 05, 2025Season: 37 SeasonEpisode: 791 EpisodeRuntime: 22:14 minutesQuality: HDIMDb: 2.987 / 10 by 10389 usersPopularity: 90.5555Language: en
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