On walks Trotter pulls, and reacts with barking and lunging when he sees other dogs. Our first step is to teach him how to walk nicely. We started in a low distraction environment
(backyard and driveway) and used a high rate of reinforcement of a yummy treat (turkey and hot dogs) for doing things we liked, as in looking at us or walking without pulling. In no time Trotter was walking much better. We then took him out on the street and, at first, he was not responding because he was too distracted, so we again increased our rate of reinforcement until he learned that paying attention to us was way more valuable to him.
Jeff Dentler, CPDT-KA, IAABC-ADT, FFCP, CTDI