The Taco Terrier has not been around long enough to form a good, solid history so you have to look at the backgrounds of the Chihuahua and the Toy Fox Terrier breeds. The Chihuahua is a Mexican breed that originated sometime around 300 B.C. from the Techichi, which is an ancient Mesoamerican breed used in Toltec sacrificial ceremonies. According to legend, the small dog was a guide to the afterlife and families would sacrifice one of these dogs for each member of their family when they passed away to help them reach the spirit world. The more modern Chihuahua was not common until the 1900s when Spanish musician Xavier Cugat started showing his dog in public appearances. They became popular in the United States in the early 1900s and have been owned by many famous celebrities such as Paris Hilton, Madonna, Britney Spears, and even Marilyn Monroe. The Chihuahua is still the 30th most well-liked dog breed in America and has been a member of the American Kennel Club since 1904. The Toy Fox Terrier is a tiny dog originating in the United States in the 1900s from Italian Greyhounds, Manchester Terriers, Smooth Fox Terriers, Miniature Pinschers, and Chihuahuas to create a small dog that could chase foxes and other vermin from their dens. The tiny Terriers were also popular in circuses, performing in dog shows, and agility competitions. In fact, they have been known to jump up to four feet in the air! They have also been seen in many commercials and are even fond of watching television according to the AKC, who accepted the breed in 2003. They are presently the 116th most common dog breed in the United States.