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Butt breathing and 5 other ways animals stay warm in winter

Popular Science

Unlike its land cousin the box turtle, painted turtles do not have a hinged bottom shell that closes when the head is pulled in. Breakthroughs, discoveries, and DIY tips sent every weekday. Winter has officially arrived in the Northern Hemisphere. With today's winter solstice, the days will start to get a little bit longer, but the cold will stick around. We humans typically handle the dipping temperatures by staying inside, sleeping more, and dressing in layers . Here are some unique ways that animals survive winter's deep freeze.