A self - eater, i think.
It's called, Self-Cannibalism. It's a disease.
The disorder is Pica.
an Omnivore
omnivore
An animal that nothing else eats may be referred to as an apex predator. These predators are at the top of the food chain and have few or no natural predators themselves.
Anorexia, deppression, dieting, lonly, mentally ill
the frog
Someone who eats crow.Rust eats away metal.
I would call poison control and your local vet.
An omnivore is an organism that is neither an herbivore (only eats plants) or carnivore (only eats animals). An omnivore eats both plants and animals. There is not really a synonym for omnivore in this sense of the word. The word omnivore can also describe someone or something that eats a lot or everything. You would call such a person or animal omnivorous. There are synonyms for the word omnivorous such as gluttonous, insatiable, voracious, or rapacious.
A horse that eats a lot
If Someone Eats bread off the floor, you'll get sick.