Curiosity always did kill the cat. A lion got the shock of its life after approaching a motionless grey lump – only to discover it was an angry hippo. The surprising video shows a lion walking up to ...

There are two species of hippopotamus: the common river hippo (Hippopotamus amphibious) and the much smaller pygmy hippo (Choeropsis liberiensis). The hippo is one of the largest mammals on Earth. On ...