The ancestor of all domestic cats is the African Wild Cat which still exists today.
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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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When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
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The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
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Tigers can see 6 times better at night than humans.
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