An adult porcupine has approximately 30,000 quills on its body, which are replaced every year.

When Sony introduced the walkman, it had a variety of different names in different countries. It was called "Soundabout" in the U.S., "Stowaway" in the U.K., and "Freestyle" in Australia.

Fathers tend to determine the height of their child, mothers their weight.

AMAZING FACTS