In general, Asiatic black bears do hibernate within the the northern latitudes (Russia, Korea, Japan and northeastern China) of their range. Further south, where food is available year round and hibernation is not necessary, females still build birthing dens and breeding usually takes place between June and July, with up to four cubs born during November to March. At our BEAR SANCTUARY Ninh Binh in Vietnam, the rescued Asiatic black bears do not hibernate, they do however have some mildly reduced activity and may sleep a bit more than the rest of the year, but they don’t go into winter dormancy. During the winter months, food quantities may be reduced depending on the bear and group. Some seasonal foods are changed and extra straw for bedding is provided.