Hippopotamus Surprise egg" of the Italian chocolate company Ferrero SpA. Hippopotamus 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"). The name comes from the ancient Greek for "river horse" (). After the elephant and rhinoceros, the common hippopotamus is the third-largest type of land mammal and the heaviest extant artiodactyl. Despite their physical resemblance to pigs and other terrestrial even-toed ungulates, the closest living relatives of the Hippopotamidae are
Pygmy salamander in light of the species having a wide distribution, a large population, and being unlikely to decline fast enough to be placed in a more threaten category. Threats to the pygmy salamander include deforestation of spruce-fir forest. Acid rain is also a threat at the high elevation that can destroy the spruce-fir trees in the pygmy salamander’s natural habitat. Pygmy salamander The pygmy salamander (or pigmy salamander, "Desmognathus wrighti") is a species of salamander in the family Plethodontidae. It is endemic to the United States in the southern Appalachians in North Carolina and Tennessee. "Desmognathus wrighti" is a member of