By www.stylerug.net
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Owls don't have eyeballs. They have eye tubes.
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Polar bears have black skin. This helps it to absorb heat from the sun to stay warm in an Arctic climate, and it likely protects the bear from harmful UV rays.
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Octopuses have three hearts. One pumps blood around the body, while the other two pump it to the gills. Oh, and that blood is blue, thanks to high copper levels!
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Butterflies can taste with their feet, using something called chemoreceptors that help them to identify plants.
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Dogs' sense of smell is about 100,000 times stronger than humans', but they have just one-sixth our number of taste buds.
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Reindeer eyeballs turn blue in winter to help them see at lower light levels.
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Squirrels can't burp or vomit. Nor can any other rodent.
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Honeybees can flap their wings 200 times every second.
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Sharks kill fewer than 10 people per year. Humans kill about 100 million sharks per year.
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Elephants have a specific alarm call that means "human."