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 slow loris wildlife status report of 1999 describes the species as "little known" and "common", based on availability of potential habitat. In 2000 the IUCN classified the pygmy slow loris as "Vulnerable", as did the Vietnam Red Data Book the same year. The European Union (EU) (2005) describes the population status in Laos as "apparently widespread, but not common anywhere". In addition to habitat destruction, the pygmy slow loris is seriously threatened by hunting and trade. Within its geographic range and neighbor countries, the trade in the pygmy slow loris has recently increased due to economic changes and human population growth, and