One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The colossal squid has the largest eyes in the world.
4