Hippopotamus 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 cetaceans (whales, dolphins, porpoises, etc.) from which they diverged
Lesser pygmy flying squirrel Lesser pygmy flying squirrel The lesser pygmy flying squirrel ("Petaurillus emiliae") is a species of rodent in the family Sciuridae. It is endemic to Malaysia. It is listed as Data Deficient because it is known only from the type specimen collected in 1901. Adequate surveys have not been done to look for this species, and so it cannot be considered Extinct. The lesser pygmy flying squirrel is arboreal and probably prefers forest. It is threatened by habitat conversion due to agriculture and logging. There are no conservation measures in place. Further studies are needed into the taxonomy, distribution, abundance, reproduction