The brown bear is also being trained in Moscow:
"Grom the brown bear started to gain weight in the Moscow zoo. The animal eats a lot and prepares for hibernation. In different places, bears sleep in winter between 2.5 and 6 months.
In warm regions, when there is an abundant harvest of nuts, bears do not lie in the den for the whole winter, but only occasionally, in unfavorable conditions, they fall asleep for several days.