When the cold and dark winter is setting in, some of us envy animals that can hibernate. This long, deep rest is an example of how nature develops clever solution to difficult problems. In this case, ...

As autumn gives way to the winter, you may ask yourself, where do animals go once the cold has set in? It’s a simple enough ...

GREENSBORO,N.C. - When it's cold outside, you want to stay inside. And you're not the only one. It's part of nature to want to hunker down inside. When animals hibernate they go into what we would ...

Some animals migrate south for the winter while others stay put and hibernate. The American black bear is one of nine bear species that really knows how to hunker down for a long winter's nap. It can ...

Compared with the trudge to work through several feet of snow, winter hibernation sounds like a pretty cushy lifestyle. But it's not a dislike of cold, wet feet that drives some animals into a wintry ...

What about a dolphin doze or a squirrel snooze? “The Secret World of Animal Sleep,” an animated series on Smithsonian Earth’s website, unlocks the secrets of sleepy wildlife, such as birds that sleep ...

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A squirrel hops over the snow in this week's blizzard. While all of Staten Island's local reptiles and amphibians are hibernators, the mammals here aren't quite as committed to such drastic action ...

Every American state experiences winter to some degree, but few bear the brunt of freezing temperatures and environmental ...

Heterothermy, the ability of some animals to lower their metabolism and body temperature, is traditionally seen as an effective adaptation to predictable seasonal bottlenecks of unproductive cold ...