Caterpie (Japanese: キャタピー Kyatapii) is a Bug-type Pokémon introduced in Generation I.
Caterpie is a worm-like Pokémon that is mainly green in color with a tan underside. Just below its head are four tiny legs that are used only for movement. On top of its head is a red, "y-shaped" antenna, which can be used to produce an odor used in self-defense, in case something tries to hurt it.
Caterpie has the ability Shield Dust, which negates all status effects that are side effects of other moves. When threatened, it can release a strong odor from its antenna, which it uses to ward off predators.
Caterpie evolves into Metapod at level 7 and then Butterfree at level 10.