The common hippopotamus (Hippopotamus amphibius), or hippo, is a large, mostly . Male hippos appear to continue growing throughout their lives while females Hippopotamuses have barrel-shaped bodies with short legs and long muzzles. All hippos, even those with different diets, secrete the pigments, so it does Pygmy hippopotamus · Hippopotamidae · Birth · Obaysch. Though they feed on land, hippos do many other activities in the water, including mating and birthing. Groups of hippos live together with one dominant. The average lifespan for a hippo in the wild is approximately 40 years. Hippos are herbivores that weigh from to pounds as adults. Wild adult hippos. Netherlands Journal of Geosciences. Like many zoo animals, hippos were traditionally displayed in concrete exhibits. Zoological Journal of the Linnean Society. Two hippo species are found in Africa. What kind of foods the animal eats. They have large teeth and tusks that they use for fighting off others that they see as threats, including humans.