No records of the Techichi are available before the 9th century, although dog pots from Colima, Mexico, buried as part of the western Mexico shaft tomb tradition, which date back to 300 BC, are thought to depict Techichis.The earlier ancestors probably were present before the Mayas as dogs approximating the Chihuahua are found in materials from the Great Pyramid of Cholula, antedating 1530 and in the ruins of Chichen Itza on the Yucatán Peninsula. The earliest of these were found at Tres Zapotes in Veracruz, Mexico, which dates to 100 AD, indirect evidence that a Chihuahua-style breed was in Mexico over 1400 years before the first Europeans arrived.Dog effigy pots dating to around 1325 AD discovered in Georgia and Tennessee also appear to represent the Chihuahua. The result of crossbreeding Chihuahuas with other dog breeds such as Pomeranian dogs, Pembroke Welsh Corgis, Boston Terriers, Pugs and so on, usually ends up in a dog breed of a Chihuahua's body size and the other parent breed's coat color and fur traits.
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