How animals evolved to stay cool under the sweltering summer sun

How animals stay cool in the summer

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While areas around the Northern Hemisphere bake under a hot summer sun, humans can head indoors to find respite from 100-degree temperatures and insufferable humidity. But what about our four-legged and feathered friends? How have they managed to stay cool for thousands of years? Here’s a look at how evolutionary traits and behavior helped these 11 species beat the heat. — Tim Skillern

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