One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11