Four fascinating ways animals survive the winter

There are a lot of things humans can do to make the colder months more comfortable, thanks to technology. But wild animals don't have access to boots, or scarves, or fireplaces to keep them cozy at night.

They have, however, evolved fascinating characteristics that allow them to get through the harsh winter months -- when food is scarce and the temperatures are frigid.

Here are four fascinating tricks animals use to survive the winter.

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