The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Cats sleep for 70% of their lives.
8
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
Sharks have been on the planet longer than trees.
14
A puppy is born blind, deaf, and toothless.
16