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 for 30,000–50,000 Vietnamese đồng (US$1.50–2.50 or €1.10–1.80). Other reports have found them to cost US$2–10. In Cambodia, the species is used in Traditional Khmer Medicine. Surveys conducted at Cambodian markets showed that the species was the third most common mammal for sale, offered at prices ranging from US$0.85–6.25 (€0.65–4.70). In Vietnam, the pygmy slow loris is used for food, medicine, and often as a pet and is among the most frequently sold species. Formerly, hundreds of pygmy lorises were traded monthly in major markets, but recently numbers seem to have decreased, due to shortages in supply. In southern Vietnam, lorises