Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Penguins have a gland above their eye that turns saltwater into freshwater.
12
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
A domestic cat can sprint at about 31 miles per hour.
274