Question: What is a rare breed of dog that was derived as a variant of Rat Terrier, Shiloh Shepherd dog or American Hairless Terrier ?

full_context: Document 1: Schutzhund: Schutzhund (German for "protection dog") is a dog sport that was developed in Germany in the early 1900s as a breed suitability test for the German Shepherd breed. The test would determine if the dog displayed the appropriate traits and characteristics of a proper working German Shepherd. Today, it is used as a sport where many breeds other than German Shepherd Dogs can compete, but it is such a demanding test that few dogs can pass.
Document 2: Sighthound &amp; Pariah Group: Sighthound & Pariah Group is the name of a breed Group of dogs, used by the United Kennel Club to classify a defined collection of dog breeds. "Sighthound & Pariah Group" dogs are not all of the same dog type and may even be of different subspecies (the New Guinea Singing Dog is listed as "Canis lupus dingo".) The Fédération Cynologique Internationale refers to Pariah dog types as "Primitive types" and places them in Group 5 with Spitz types; sighthounds have their own group, Group 10. Other kennel clubs place most hounds together in the Hound Group, and the primitive types in other groups.
Document 3: American Russell Terrier Club: The American Russell Terrier Club (formerly named the English Jack Russell Terrier Club), founded by JoAnn Stoll in 1995, was the first registry in the United States to maintain the Russell Terrier as a separate breed from the Parson Russell Terrier. The American Jack Russell Terrier Club is affiliated with both the United Kennel Club and the American Kennel Club. The purpose of the early founders was to establish a registry for the perpetuation and development of the Russell Terrier as a pure strain of working Jack Russell Terrier keeping their blood and type pure within the registry to works towards Kennel Club recognition as an official breed in the US. On January 1, 2001, the United Kennel Club recognized the Russell Terrier as an official breed, designating only the stock from the American Russell Terrier Club as Foundation stock for the UKC Russell Terrier. In 2004 the American Russell Terrier Club submitted an official request to include the American Russell Terrier Club stock into the AKC FSS Program to work towards becoming an official breed under the perimeters. On December 8, 2004, the AKC officially accepted the Russell Terrier.
Document 4: Rat Terrier: The Rat Terrier is an American dog breed with a background as a farm dog and hunting companion. Traditionally more of a type than a breed, they share much ancestry with the small hunting dogs known as feists. Common throughout family farms in the 1920s and 1930s, they are now recognized by the United and American Kennel Clubs and are considered a rare breed. Today's Rat Terrier is an intelligent and active small dog that is kept both for pest control and as a family pet.
Document 5: Chinese Crested Dog: The Chinese crested dog is a hairless breed of dog. Like most hairless dog breeds, the Chinese crested comes in two varieties, with and without fur, which are born in the same litter: the Powderpuff and the Hairless.
Document 6: American Hairless Terrier: The American Hairless Terrier is a rare breed of dog that was derived as a variant of Rat Terrier. As of January 1, 2004, the United Kennel Club deemed the AHT a separate terrier breed, granting it full UKC recognition. An intelligent, social and energetic working breed, the American Hairless Terrier is often listed as a potential good breed choice for allergy sufferers.
Document 7: Shiloh Shepherd dog: The Shiloh Shepherd is a new dog breed that is still under development. They are not recognized by any major kennel club, but may be shown in some rare breed organizations.
Document 8: Rare breed (dog): Rare breed (dog) is any breed of dog that is small in number and is used to refer to both old established breeds such as the Stabyhoun and Glen of Imaal Terrier or newer creations. Since dogs have greater genetic variability than other domesticated animals the number of possible breeds is vast with new crosses constantly occurring, from these both selected and random crosses may come new breeds should offspring reliably breed true to type. New breeds from the wild such as the Carolina Dog are quite rare compared to attempts at breed creation from man as found in the American Hairless Terrier which sought to exploit a mutation.
Document 9: Ecuadorian Hairless Dog: The Ecuadorian Hairless Dog (in Spanish: Perro calvo dorado ecuatoriano) is a breed of hairless dog originated from Santa Elena Peninsula in Ecuador. It is now considered the rarest breed between the hairless dogs.
Document 10: Shetland Sheepdog: The Shetland Sheepdog, also known as the Sheltie, is a breed of herding dog. The original name of this breed was Shetland Collie, but this caused controversy among the Rough Collie breeders at the time, so the breed's name was formally changed to Shetland Sheepdog. This small dog is intelligent, vocal, excitable, energetic and willing to please and work hard. The breed was formally recognized by The Kennel Club in 1909.
Document 11: Fox Terrier: Fox Terriers are two different breeds of the terrier dog type: the Smooth Fox Terrier and the Wire Fox Terrier. Both of these breeds originated in the 19th century from a handful of dogs who are descended from earlier varieties of British terriers, and are related to other modern white terrier breeds. In addition, a number of breeds have diverged from these two main types of fox terrier and have been recognised separately, including the Jack Russell Terrier, Miniature Fox Terrier and Rat Terrier. The Wire and Smooth Fox Terriers share similar characteristics, the main differences being in the coat and markings. They have been successful in conformation shows, more prominently in America than their homeland.
Document 12: Mal-shi: Mal-shi, also known as Malshi, Malt-tzu, Maltzu, and Malti-zu, are a type of designer dog resulting from a cross between a purebred Maltese and a purebred Shih Tzu. Most Mal-shi are F1 crosses, as there has been little interest in developing the dog as a breed. They are not recognized by any major kennel club.
Document 13: Herding Group: Herding Group is the name of a breed group of dogs, used by kennel clubs to classify a defined collection of dog breeds. It does not refer to one particular type of dog. How the "Herding Group" is defined varies among kennel clubs, and different kennel clubs may not include the same breeds in their "Herding Group". Some kennel clubs do not use the term "Herding Group". The international kennel club association, the Fédération Cynologique Internationale, does not have a "Herding Group", and includes most pastoral dogs in Group 1 "Sheepdogs and Cattle Dogs (except Swiss Cattle Dogs)" and Group 2 "Pinscher and Schnauzer - Molossoid Breeds - Swiss Mountain and Cattle Dogs".
Document 14: Norwich Terrier: The Norwich Terrier is a breed of dog originating in the United Kingdom, and was bred to hunt small vermin or rodents. With a friendly personality, Norwich Terriers are today mostly a companion dog breed. One of the smallest terriers, these dogs are generally healthy, but are relatively rare, due in part to their low litter size and the common need for caesarian sections. Their drop-eared variety is the Norfolk Terrier.
Document 15: King Shepherd: The King Shepherd is a dog breed developed from crossing German Shepherd Dog with Shiloh Shepherd and long-coated European lines of German Shepherd along with the Great Pyrenees in the 1990s.
ground_truth: American Hairless Terrier