Pygmy hippopotamus the pygmy hippopotamus, are considered dwarf hippopotamuses, rather than pygmies. They are likely descended from a full-sized species of European hippopotamus, and reached their small size through the evolutionary process of insular dwarfism which is common on islands; the ancestors of pygmy hippopotami were also small and thus there was never a dwarfing process. There were also several species of pygmy hippo on the island of Madagascar (see Malagasy hippopotamus). Pygmy hippos share the same general form as a hippopotamus. They have a graviportal skeleton, with four stubby legs and four toes on each foot, supporting a portly frame. The
Lesser pygmy flying squirrel and ecology of this species. 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