In the faunal geographical province of the Burkhan Khaldun Mountain in the Khentii district the fauna reported are more than 50 species of 27 genera of six orders including five species of mammals/insectivores, 4 species of hymenoptera, four species of lagomorpha, 19 species of rodents, 13 species of predators, five species of ungulate, one species of reptile, and 253 species of birds.: According to the Mongolian Red Data Book the very rare mammal species are musk deer (Moshus moshiferus) and moose (Alces alces); the very rare bird species are the Siberian white crane (Grus luecogeranus), Greater spotted eagle (Aquila clanga), Pallas's fish eagle (Haliaeetus leucoryphus), white-naped crane (Grus vipio) and hooded crane (Grus monacha); the fish species is the Amur sturgeon (Acipenser schrenckii).: