Pygmy hippopotamus population that freely breeds in zoos around the world. Between 1970 and 1991 the population of pygmy hippos born in captivity more than doubled. The survival of the species in zoos is more certain than the survival of the species in the wild. In captivity, the pygmy hippo lives from 42 to 55 years, longer than in the wild. Since 1919, only 41 percent of pygmy hippos born in zoos have been male. While the common hippopotamus was known to Europeans since classical antiquity, the pygmy hippopotamus was unknown outside its range in West Africa until the 19th century. Due
Pygmy bushtit forest types, and is often encountered on the forest edge. The pygmy bushtit is the smallest member of its family, and the smallest species of bird on Java. It is in length. Pygmy bushtit The pygmy bushtit ("Aegithalos exilis") is a species of bird in the bushtit family Aegithalidae. The species was once placed, along with the rest of its family, with the true tits, Paridae. Its relationship with other species in its family is uncertain, but is still placed within the family due to similarities in behaviour and vocalisations. It is endemic to Indonesia, where it occurs only on