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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13