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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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
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When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
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