The Toy Chisoxy is a fairly rare hybrid breed. In order to learn more about the Toy Chisoxy, it is a good idea to look at the origins of his parent breed in order to understand the history of the hybrid. No one is quite certain how the Chihuahua of today came into existence. One idea is that the Chihuahua descended from a Central/South American dog known as the Techichi. This dog was a part of the Toltec civilization. He had a round head and large, erect ears much like the Chihuahua of today. Artwork depicting the Techichi dates back to the ninth century B.C. It is thought that the Techichi was absorbed into Aztec society when the larger, more powerful civilization overtook the Toltecs. Over time, the Techichi became a part of Aztec rituals. The Techichi was believed to have mystical powers - the ability to heal, see the future, and guide souls into the afterlife. As the Aztecs were obliterated by the Spanish, the Techichi fell into extinction. A second theory is that the ancestor of the Chihuahua was brought to Central and South America by Spanish traders. This dog would have been small and hairless, and it was interbred with native dogs, which produced the Chihuahua as we know it. Regardless of the exact origin, the dog of today hails from an area in Mexico also named Chihuahua. As tourists began visiting Mexico, they brought the small dog back to America with them. The first Chihuahua was registered with the American Kennel Club in 1904. The Toy Fox Terrier is directly descended from the Smooth Fox Terrier, a dog bred to flush foxes from their dens during the hunt. The Smooth Fox Terrier was approximately twenty pounds at maturity, and, while he was an adept hunter, the smaller "runts" of the Smooth Fox Terrier breed seemed a little feistier during the hunt. Breeders began attempting to cultivate a smaller, more resilient breed of Fox Terrier, and the Toy Fox Terrier was the result. The Toy Fox Terrier was first recognized by the American Kennel Club in 2003, nearly one hundred years after the United Kennel Club designated the Smooth Fox Terrier its own breed. It is possible that the Smooth Fox Terrier was interbred with Chihuahuas and Toy Manchester dogs in order to make the smaller breed.