Usually when the weather gets cold, they are triggered to hibernate. That's the most logical reason anyway. It may have to do with a some sort of chemical reaction the cold weather does, but most likely it's just an instinct.
:) Hope this helps! :)
Isabella246 :D
In the winter
Bears are known to hibernate in these woods.
black bears and grizzly bears
The polar bears do not learn to hibernate,it is naturally inherited.
Brown bears hibernate in the winter because there isn't enough food.
Bears Hibernate in the Winter so that they dont die
they proved that bears don't hibernate
For example most bears are omnivores, which hibernate.
No but they do hibernate.
Polar bears don't hibernate, only pregnant females, and that only for three months.
Bears and badgers hibernate.
Koalas are not bears: hence, they do nothibernate.