Layer hidden off the screen Who Are We Capital Dog Training Club of Washington, DC was established in 1938 and is one of the oldest obedience clubs in the country. We welcome all dogs, whether purebred or mixed-breed. CDTC is devoted to the sport of dog obedience, and to providing training services to the community at large. Where Are We CDTC has an air conditioned clubhouse at 2758 Garfield ...