Cows can sleep standing up, but they can only dream lying down.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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Dogs sometimes fake being sick to get attention.
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Tigers can see 6 times better at night than humans.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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