Hello, I'm an expert in the field of Pokémon knowledge. When it comes to the evolution of Pokémon, Caterpie evolves at a specific level. Caterpie, known as the "Worm Pokémon," is the first stage in its evolutionary line.

Caterpie evolves into Metapod when it reaches level 7. Metapod is the intermediate stage before evolving into the final form, Butterfree. The evolution from Metapod to Butterfree occurs not at a specific level but through a process called "shedding skin," which is triggered when the player has a certain amount of time pass or after a certain number of battles have taken place.

So, to summarize:
- Caterpie evolves into Metapod at level 7.
- Metapod evolves into Butterfree through a process that is not level-dependent.

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Caterpie (Japanese: ���㥿�ԩ` Caterpie) is a Bug-type Pok��mon introduced in Generation I. It evolves into Metapod starting at level 7, which evolves into Butterfree starting at level 10.read more >>