Sharks have been on the planet longer than trees.
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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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Only 3% of bird species have penises.
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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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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4