The article mentions another case: > In one particularly horrifying incident in 2009, a chimpanzee called Travis who had been raised by humans from birth maule

The article mentions another case: > In one particularly horrifying incident in 2009, a chimpanzee called Travis who had been raised by humans from birth mauled his owner’s friend, biting and tearing her face, ripping out her eyes, removing one of her hands and most of the other. Horrifying indeed...