WHAT IS POLYDACTYLY? Polydactyly, or extra digits, is a common trait among cats, particularly it seems, among Celtic cats and cats on part of America's Eastern coast and South West Britain. This distribution may well be linked. Except for Twisty Cats, polydactyly is not a product of bad breeding. It is simply a naturally occurring genetic variation and, as noted later on, polydactyly is found in fossil reptiles - meaning that five digits might be the abnormal form! Only one form of polydactyly is known to be harmful. Polydactyly (six or seven toes) varies from the classic "mitten cat" through to cats which simply have more toes than normal, but no "thumb". A correspondent to the New Scientist noted that the innermost extra toes on the front paws are often opposable and some cats use them with quite startling proficiency to manipulate small objects with almost human dexterity. Some owners of polydactyl cats joke that their cats are more intelligent because of this and represent the next stage in feline evolution - the ability to open cartons and cans unaided. Polydactyl cats are known by various names - "mitten cats", "thumb cats", "six-finger cats" and "Hemingway cats". The latter is because of writer Ernest Hemingway who made his home on the small island of Key West, Florida. He shared the island with nearly 50 cats, including a 6-toed polydactyl given to him by a ship captain; the cats bred and the polydactyl trait became common, hence polydactyls are often known as "Hemingway Cats". Hemingway's colony of cats was free-breeding with the local cat population and the ratio of polydactyl cats to normal-toes cats was about 50/50. Another story suggests that the cat given to Hemingway was a female double-pawed cat and that the polydactyl cats on the island came from 19th Century ships' cats. The high rate of polydactyl cats in Boston, USA has also led to the nickname "Boston Thumb Cats". The nickname "double-pawed" cats is a misnomer since there is a specific double paw condition. For more information go to this web site: POLYDACTYL CATS