The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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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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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
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