- Ticks are second only to the mosquito as the most dangerous parasites to humans.

 - The Russian Blue is a breed of cat prone to having an extra toe. Six toed cats are so common in Boston and surrounding parts of Massachusetts that some experts consider it an established mutation.

 - Sir Isaac Newton invented the cat door.

 - The Wizard of Oz's Toto was played by a female Cairn Terrier named Terry

 - A dog's normal body temperature is 101.5 degrees. Thus, the term 'hot dog'!