Cobras bite, yeah, but they bite to inject venom. They're talking about bites that maim or kill just from the piercing fangs and crush force of the jaws. Although, fun fact: human beings have so many different kinds of bacteria in their mouths that a bite from a person that breaks the skin of another person could kill from infections quite easily.Isn't a cobra an animal that only bites? They don't constrict or headbutt or anything else.