Condoms were originally made of animal intestines or linen.
347
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Dolphins have names for one another.
18
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
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
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Cats and dogs can hear ultrasound.
350
The oldest recorded elephant lived for 82 years.
213