Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Nicole Kidman is scared of butterflies.
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The cat brain weighs about 30g.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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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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