Anthropology

This means primarily vegetables, grains, seeds, nuts.
Our bodies can manufacture protein if needed and the right combination of grains such as legumes and rice, for example, are consumed together.

What seems preposterous are all these Big Foot meal "theoreticians." They claim Big foot could hunt down animals by running. (I am assuming Big Foot would be an offshoot of Gigantopithecus. Sadly I cannot accept those ideas, for primates tend to be gregarious and they would need a pretty large group to maintain genetic viability through the epochs.) When a 1,000 pound primate runs, it hits the ground with each footstep and sends out vibrations that would alert any animals grazing that something big this way comes. Now trees and bamboo cannot escape and they will be munched upon, leaves if nothing else.