Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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Cows can sleep standing up, but they can only dream lying down.
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Giant Anteaters' front legs look like a panda.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
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