The Hustai national park is established in 1993, one year after the initiation of the reintroduction project of the Takhi wild horses (Przewalski’s horse) to the Husatin Nuruu. The national park is 90 km west of Ulaanbaatar city. The Hustai covers 50,600 hectare land which is home to 459 species of vascular plants, 85 species of lichens, 90 species of moss and 33 species of mushrooms. 44 species of mammals have been recorded, including red deer, Mongolian gazelle, roe deer, wild boar, wild sheep, ibex, Mongolian marmots, grey wolves, Eurasian Lynx, pallas cat, red fox, corsac fox and Eurasian badger. The 217 species of birds include golden eagle, Lammergeirer, great bustard, whooper swan, black stork, Daurian partridge and little owl. There are 16 species of fishes, 2 species of amphibians and 385 species of insects (including 21 species of ants, 55 species of butterflies, 10 species of bush crickets and 29 species of grasshoppers). A new species of soil insect has been found in the Hustai national park and given the scientific name of Epidamaeus Khustaiesis. In 2002, the Man and the Biosphere Reserves organization of UNESCO certified the Hustai national park as a member of the World biosphere network of natural reserves.