Mark saved our lives. We had a brand new puppy and no idea what to do or how to train him. Within one session, Mark had us working with the dog to sit and stay. He also established boundaries in our open floor plan home whereby Harry would only go in the kitchen, family room or mud room - a big help given that he was not fully housebroken. I don't know that we would have been able to keep Harry without Mark and he is how the favorite member of our family! I can't thank him enough for everything he did, recommendations on house training, food to feed him, nutritious treats, what we should expect and most importantly how to work with him in a very effective and fun manner.