Master Dog Trainer David Ruiz San Diego Master Dog Trainer David Ruiz and Student Mr. Ruiz was born in Guatemala, located in Central America. In January 1955, when he was 12 years old, he immigrated to the United States. Soon after, he became associated with Pilot Dogs, Inc., a school for the training of guide dogs for the blind. There he served as kennel-boy, interpreter for Spanish speaking blind students, and a trainer and instructor. He attended Ohio State and Franklin Universities in Columbus, Ohio, and during the Viet Nam era, served in the United States Marine Corps. Since 1978, he has been the Owner/Director of ABC (A Better Canine) School for Dogs in San Diego, California. Mr. Ruiz is a very quiet and gentle person; otherwise, hu