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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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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In 1949, an official boxing match between a bear and a man was held. The bear won.
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