Animal Skinning
Heavy wear patterns on Neanderthal front teeth suggest they used their teeth as vices to grip objects. Microscopic traces of animal material discovered on the surface of the teeth suggest that animal skins were gripped in their teeth, freeing up their hands to scrape away fat and sinew with stone tools. Neanderthals were most likely no more hairy than we are, so they probably used animal skins to keep them warm.