Hibernation: What's going on for grizzly bears in winter?

Making your bed can be a pain and nobody knows that better than the grizzly bear. Each fall a grizzly moves an incredible one ton of material to make its den. By December, bears in the Northern Rockies are taking full advantage of their cozy winter homes, settled into a long slumber before emerging in March or April. The first bears are already out and about, but before we welcome them back, let's pause to consider the science of their winter sleep. It's commonly referred to as hibernation-but is that really the right description?

Do Grizzly Bears Hibernate?

Experts say that hibernation isn't...

 

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