Can Pain Cause Dog Reactivity? Understanding Behavior, Form, and Function In the world of canine behavior, proper physical form and function matter immensely. While design theory says form follows function, in the canine body, solid form drives effective function. When a dog moves efficiently and naturally, we call this moving without compensation. However, when a dog's body compensates—meaning one group of muscles takes over the job of an injured or weak muscle group—the bod