Mark Castillero founded Pro-Train after earning a degree in animal science from UC Davis in 1976, and according to the company's website, he has trained more than 10,500 dogs over a career spanning more than four decades. His credentials include work as a licensed guide dog instructor in California and certification as a therapy dog evaluator. He also runs the Pro-Train Institute, which the site describes as a trainer school that has graduated students from around the world, operating out of a five-acre facility in Bonsall, about 30 miles north of San Diego in northern San Diego County.
The business offers services ranging from puppy training and obedience work to behavior modification, protection training, and service dog preparation. Their site states they train service dogs for people with visible or invisible disabilities, using dogs that are specially bred, rescued, or donated. Pro-Train also operates private lessons and in-home training for owners in the Vista area. They describe their philosophy as practical and no-nonsense, focused on building lasting obedience rather than quick fixes.
The company advertises a lifetime guarantee on training results regardless of the dog's age. Michael Luevano, described as Castillero's protégé, now serves as head administrator and directs the trainer school.