Mostly other hippos. A grown, healthy hippo is too big to be troubled by the usual carnivores, but particularly the bulls do fight between themselves a fair bit. Elephants and Rhinos have been known to attack hippos as well, but it's rare.
Hippos only eat plants, because they are herbivores. Any animals they kill are out of self defense. Although they can kill even lions or crocodiles, they would not be able to kill an elephant.
hippos
The collective nouns are a bloat of hippos, a crash of hippos, or a herd of hippos.
do hippos hibernate
what hippos
well the male hippos enimes are humans and other hippos what he said ^
Hippos and alligators don't live in the same regions. Hippos do kill crocodiles, but they don't eat them.
other hippos
yes hippos do
Mother Hippos
Hippos ended in 749.