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
Short-tailed pygmy tyrant Short-tailed pygmy tyrant The short-tailed pygmy tyrant ("Myiornis ecaudatus") is a small species of tyrant-flycatcher. The species is one of the smallest birds on Earth and the smallest passerine. Among both the family and the order, only the closely related black-capped pygmy tyrant approaches similarly diminutive sizes. The pygmy tyrant is widespread throughout most of the Amazon in northern and central South America. A resident of tall humid forests, the bird is occasionally found in more open woodland, specifically around treefalls and tall trees in clearings. It ranges from sea-level to . It is fairly common throughout most of its