The colossal squid has the largest eyes in the world.
4
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5