Professional dog trainer Larry Krohn, owner and trainer at Pak Masters dog training of Bowling Green, Kentucky. Larry specializes in many areas of dog training and is best known as a top Remote Collar Trainer and Dog Aggression Specialist. Larry is also a retired Federal Agent and has been training dogs for 26 years. Pak Masters offers family style board and trains meaning we only take one dog at a time and your dog lives as part of my family, and we also offer one on one private sessions. Larry is also the author of the highly successful book on e collar training Everything You Need To Know About E Collar Training which has sold tens of thousands of copies all over the world and has changed how many see the tool.