The Thai Ridgeback. An ancient breed of dog it was formerly unknown outside of Thailand, but is gaining notice in the Western world. The history of the breed is the subject of numerous hypotheses. Pre-historic rock art indicated that Thai dogs had accompanied a hunter since the new stone age of the country (over 2,000 years ago). An intelligent breed, when well bred and properly socialized Thai Ridgebacks make loyal, loving family pets, but are not for the novice dog handler.