Cats also have excellent hearing and a powerful sense of smell.

There are two types of elephant, the Asian elephant and the African elephant (although sometimes the African Elephant is split into two species, the African Forest Elephant and the African Bush Elephant).

Natural gas does not have any odor. In order to detect a gas leak, some gas companies add a chemical that smells similar like rotten eggs.

A M A Z I N G   F A C T S