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
Pygmy parrot are stiff and form projections at the end of the tail. The cere is prominent. The external appearance of the adult males and adult females differ to varying extents in different species. Juveniles are duller. The genus was defined by French naturalist René-Primevère Lesson in 1831. The name "Micropsitta" is derived from the Greek "mikros" meaning small and "psitta" for parrot. The pygmy parrots consist of six species and several subspecies: Genus: "Micropsitta" (pygmy parrots) Pygmy parrot Pygmy parrots are the smallest members of the parrot order. The six species of pygmy parrots are all in the genus Micropsitta, which