Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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Rattlesnake mating sessions have been known to last more than 22 hours.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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