Penguins have a gland above their eye that turns saltwater into freshwater.
12
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
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
Cows can sleep standing up, but they can only dream lying down.
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