The Chihuahua is one of the smallest breeds of dog, and is named after the Mexican state of Chihuahua. Chihuahuas are the smallest breed recognized by some kennel clubs. There are two varieties of Chihuahua – the Smooth Coat (smooth-haired) and the Long Coat (long-haired). The Kennel Club considers the two to be distinct breeds.
Both the Smooth and Long Coats have their special attractions and are equally easy to keep clean and well-groomed. The term "smooth coat" does not mean that the hair is necessarily smooth, as it can range from having a velvet touch to a whiskery feel. Longhaired Chihuahuas are actually smoother to the touch, having soft, fine-guard hairs and a downy undercoat, which gives them their fluffy appearance. Unlike many longhaired breeds, longhaired Chihuahuas require no trimming and minimal grooming. Contrary to popular belief, the longhaired breed also typically sheds less than its shorthaired counterparts. It may take up to three or more years before a full longhaired coat develops.