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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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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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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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Condoms were originally made of animal intestines or linen.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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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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