Penguins have a gland above their eye that turns saltwater into freshwater.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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