Looking at the human behavioral pattern, it is easy to understand that certain strange human behaviors are not of human origin. Man is a social being that loves order, competition and sometimes domination. However, there are certain very strange actions perpetrated by some "humans" that makes one to wonder if these persons are human although they look like one. e.g ( eating human flesh, serving human flesh in restaurants, having sex with babies, drinking human blood, having sex with one's own child or blood relation making babies with one's own daughter, etc.) Lions don't eat their kind, same with tigers and other animals, save for some animals like pigs who will eat their piglets immediately after delivery)
