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
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
There are approximately three chickens for every human on Earth.
13
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
Condoms were originally made of animal intestines or linen.
347
A cow produces around 200,000 glasses of milk in her lifetime.
373
The head of a jellyfish is called the "Bell."
6