The most expensive cow in the world was sold in 2009 for $1.2 million.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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