As part of its ongoing efforts to promote every single Pokémon out there, The Pokémon Company has shared special content dedicated to Slowpoke:
Did you know? Slow-witted and oblivious, this Pokémon won’t feel any pain if its tail gets eaten. It won’t notice when its tail grows back, either. When this Pokémon’s tail is soaked in water, sweetness seeps from it. Slowpoke uses this trait to lure in and fish up other Pokémon.
Source: The Pokémon Company
Source:Pokémon