Caterpie (Japanese: キャタピー Caterpie) is a Bug-type Pokémon. It evolves into Metapod starting at level 7, which evolves into Butterfree starting at level 10.
Caterpie is serpentine and resembles a green caterpillar with yellow ring-shaped markings down the sides of its body. Its most notable characteristic is the bright red antennae (osmeterium) on its head. These and the large eye-shaped markings help to startle predators. It shares many characteristics with other larval Pokémon such as Weedle, Wurmple and Sewaddle.