<|im_start|>user
How long do bears hibernate?

Context:
Bears use shelters, such as caves and logs, as their dens; most species occupy their dens during the winter for a long period of hibernation, up to 100 day<|im_end|>
<|im_start|>assistant
Bears can hibernate up to 100 days in their dens during the winter<|im_end|>
