One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Mosquitoes don't just bite you, they also pee on you.
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A dairy cow can produce more milk when listening to music.
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In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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