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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A cat can jump FIVE TIMES as high as it is tall!
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When cats are happy, they may squeeze their eyes shut.
10
Sharks have been on the planet longer than trees.
14
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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