Grute

A caterpillar-like monster with a cylindrical body, wart-like feat [sic], and a large mouth. Mainly feeding on leaves, it is said to be able to consume an entire forest in one night. It has a hard shell and sharp thorns seemingly thinks [sic] to the needles it eats from trees growing in frigid regions. It also has strong teeth, allowing it to eat not only the trunks of trees, but also living creatures once its beloved leafy meal is unavailable.