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Was Team Rocket wrong for cutting their tails? It's established in the videogames that pokemon are eaten by people and other pokemon. Slowpoke tails grow back fast, are nutritious, and don't require killing off the pokemon. Also though this may be more headcannon, I'm assuming there is little to no pain involved, as slowpoke use their tails regularly for bait, and according to some sources could go a full day without realizing it has been bitten.