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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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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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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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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