Chihuahua (dog) Chihuahua (dog) The Chihuahua () is the smallest breed of dog and is named after the state of Chihuahua in Mexico. Chihuahuas come in a wide variety of colors, and two coat lengths. The Chihuahua's history is convoluted, and many theories surround the origin of the breed. Both folklore and archaeological finds show that the breed has origins in Mexico. The most common theory is that Chihuahua are descended from the Techichi, a companion dog favored by the Toltec civilization in Mexico. No records of the Techichi are available before the 9th century, although dog pots from Colima, Mexico, buried
Rare breed (dog) found in the American Hairless Terrier which sought to exploit a mutation. Modern dog breeds have documented descent from known foundation stock, and new breeds are often derived from older, established modern breeds. New documentation of a long established dog type, sometimes with a variation on an older name, also creates a new modern breed. The newly documented breed is then referred to as a "rare breed" as long as the number of dogs of the breed remain small. Breeds go through a recognition process by breed clubs, kennel clubs and other agencies, so that dogs can be guaranteed through