One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Cats recognise the voice of their owner, but never evolved to care.
22
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
A puppy is born blind, deaf, and toothless.
16
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4