- Bingo is the name of the dog on the side of the Cracker Jack box

 - Sir Isaac Newton invented the cat door.

 - At International Falls, Minnesota, it is illegal for a dog to chase a cat up a telegraph pole. Owners are liable to be fined.

 - Dogs have about a hundred different facial expressions, most of them made using their ears

 - The smallest of the dog's breeds, the Chihuahua, is usually the breed that lives the longest.