There are more chickens than people in the world.
325
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The penguin is the only bird who can swim, but not fly!
90
Beavers have orange teeth!
23
Dogs have been man's pet for over 14,000 years.
224
7,000 new insect species are discovered every year.
30
