A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
A puppy is born blind, deaf, and toothless.
16
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
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17