..hippos are extemely dangerous animals in the wild. In an average year in Africa, hippos kill a far larger number of humans than any other mammal, except other humans. Hippos are short-tempered, huge animals that spend most of their days beneath the surface of shallow waters. When boats or swimmers pass overhead or near-by, they respond to the potential threat by snapping at them with their enormous jaws. It’s a defensive action, not a hunting action, but that is small consolation to the families of those who were bitten in half or to those who were bitten.
to find out about their bollocks read the rest of this article
http://johnmckay.blogspot.com/2006/09/mammoths-mastodons-and-killer-hippos.html