Penguins have a gland above their eye that turns saltwater into freshwater.
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In Australia, there are spiders big enough to eat snakes.
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Dolphins have names for one another.
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When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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