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
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Dogs have been man's pet for over 14,000 years.
224
Moths are unable to fly during an earthquake.
328