K9 Professional Tracking -- A Complete Manual for Theory and Training in Clean-Scent TrackingA well trained tracking dog can be the deciding factor that determines success in both criminal investigations and search and rescue operations. When the stakes are high, demanding the highest level of performance from your K9, you need training methods relied upon by police forces and SAR teams around the world. Dr. Resi Gerritsen and Ruud Haak show you how to train your dog in clean scent tracking, a proven method that trains dogs to follow a