Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Cats recognise the voice of their owner, but never evolved to care.
22
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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