Hippos are incredibly strong so there are very few animals which can actually overpower them. Despite being vegetarians, they are actually quite aggressive and they also live in herds which means hunting a hippo is quite difficult. read more
The common hippopotamus (Hippopotamus amphibius), or hippo, is a large, mostly herbivorous, semiaquatic mammal native to sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus (Choeropsis liberiensis or Hexaprotodon liberiensis). read more