The Daurian hedgehog (Mesechinus dauuricus) is a species of hedgehog in the Erinaceidae family. It is listed in the Red book of Russian Federation as a protected species with an unclear status, generally considered to be endangered, although the IUCN lists it as "least concern". It populates the Transbaikal region of Russia (this region is sometimes called Dauria, hence the name) and Northern Mongolia. It lives in dens and inhabits both forests and steppes. The adult Daurian hedgehog is 15 to 20 centimeters long and weighs up to 1 kilogram (usually around 600 grams). Most live up to six years in nature. Like most hedgehog species in temperate regions, the Daurian hibernates during the winter.