Crocodiles and hippos are the largest and fiercest denizens of Africa’s freshwater habitats. While they are not natural rivals—they do not compete for the same food, nor do they normally eat each ...

Karen Paolillo (with the skull of a hippo named Bob) watches over a hippo pod in remote Zimbabwe, where tensions flare. Paul Raffaele Because Africa's scarcest natural resource is water, ...

Hippos are large, semi-aquatic mammals with a barrel-shaped body, short legs, and a large head. They have gray or brownish-gray skin, with pinkish areas around their eyes, mouth, and ears. Hippos are ...