Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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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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A dork is a whale's penis.
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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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