Cats sleep for 70% of their lives.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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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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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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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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