Dr. med. vet. Vera Biber reports on dogs for whom all usual training attempts fail. She demonstrates that such behavioral disorders are often rooted in nutrition. Many feeding methods, especially those involving commercial dog food, can trigger allergies in dogs, which in turn can lead to hyperactive behavior. This book, now in its 4th edition, is our most successful title. Enthusiastic readers continuously call the publisher to express their gratitude to us and the author. Time and again, we hear: "The author's tips really work! This is the best dog book I have ever read!" The book reveals the exact connection between feeding, allergies, and your dog's behavioral issues. You can easily test which foods are intolerable for your dog. The author explains precisely how to proceed with this.