We already expect so much out of these animals. We've selectively manipulated their breeding to such a state that their genetic health is causing them great suffering and short life spans. We have pushed the limit with using dogs to our advantage already. Now, where do people get the idea that its moral and OK to use such aversives which cause discomfort, fear, confusion, startling and pain? Why is it OK to exert such control over another living being just because we can? If it takes this level of control to train a dog, I'd rather see an untrained dog. And the justification that it might save a dog's life doesn't measure up. Leashes, fences and humane training methods can save a life. What kind of life is it when a dog is subjected to such punishment? It has gotten to be the mentality that "I want this or that from my dog and I'll go to any lengths to get my way," be it stern, harsh, domineering training methods all the way to electric shock treatment. Atrocious.