Cruncher

A catepillar-like monster known for the sharp teeth that point of [sic] of the mouth that makes up half of its head. It is a voracious eater, and when it can't find the soft plants and leaves it mainly feeds on, it will then chew up the trunks and roots of trees, instead. Though it rarely attacks animals and humans, it isn't afraid of beings larger than itself who dare disturb its feeding grounds and will attack ferociously.