Not any training, but proper training brings out the best in your dog and allows for real companionship. Training can be a life saver for your dog, and a house and yard saver for you. Advanced Off-Leash Training is also available. Never hit or yell at your dog. But that's not the only reason why verbal and physical abuse can never be a part of the relationship between you and your dog.
Abuse destroys love and trust in dogs as well as people.
Yes, yelling is abusive. Your dog hears five times greater than you do. If you are yelling at him and he cowers, it's not guilt.