Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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Sharks, like other fish, have their reproductive organs in their chests.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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