A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats recognise the voice of their owner, but never evolved to care.
22
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Dogs have been man's pet for over 14,000 years.
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