Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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The reindeer is the only mammal that can see UV light.
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