Arthur J. Hagatti, the former commander of the K- 19 Corps in the United States, is the most famous dog trainer in the United States. Representative works include How to Get Your Dog to Perform on Stage and Encyclopedia (edited by dog training). He innovated some dog training techniques to make them more practical and effective, and these techniques have been applied all over the world. At the same time, he participated in many professional dog training activities, such as studying dog behavior for the Department of Supernormal Psychology of Duke University. At present, he is writing a column about dog behavior for the Bulletin of the American Kennel Association, and is writing a new book, Zen and the Art of Dog Training.