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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Cats and dogs can hear ultrasound.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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