Welcome to Cooperís Dog Training and Behavior Modification. My goal for every one of my clients is to have a sound and trusting relationship with their dog. I use positive reinforcement methods to work on everything from basic obedience to aggression. With my BS in Zoology, I bring the education and experience necessary to address your dogís needs. Iíve worked with top trainers around the country since 2001 and bring years of experience working with dogs of all ages and breeds. I am also a Certified Professional Dog Trainer and a member of the Association of Professional Dog Trainers. Please browse this site to learn more about Cooperís Dog Training and Behavior Modification and give me a call in Portland, Oregon at 503-452-3065 so that we can work together to form a strong, positive relationship between you and your dog.