Larvitar

Larvitar is one of the types of Pokémon species. They are rock-ground type Pokémon that first appeared in the Game Boy Color video game Pokémon Gold and Silver. Their name, Larvitar, is possibly a mix between the words larvae and tar.

Habitat and diet
Apparently, Larvitar perfer to eat dirt, and also won't stop eating until it has ingulfed every bit of dirt in the area that it's in. Larvitar are born underground, where they will have to eat it's way it's way through the dirt until it can be above the ground.