Overview: A mad scientist switches Chopper's and Yakky's brains, and the two of them drive Fibber Fox crazy.
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First Air Date: Jan 30, 1961Last Air date: Jan 06, 1962Season: 2 SeasonEpisode: 97 EpisodeRuntime: 7 minutesQuality: HDIMDb: 6.98 / 10 by 208 usersPopularity: 22.305Language: English