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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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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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Camels and llamas can cross breed. The offspring is called a ‘Cama’.
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