Sharks have been on the planet longer than trees.
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Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
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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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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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A domestic cat can sprint at about 31 miles per hour.
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Early American humans hunted car-size armadillos and used their shells for houses.
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