The ONLY method I use is to make sure you are always calm around your dog or when handling a behavior. When I had a food agressive Lhasa Apso that used to jump up on my bed, I would grab him by the collar and simply guide him off. When he was able to sit there for about a minute or two, I would positively reinforce his behavior.

One day, he jumped up on my bed again and I grabbed him by the collar and pulled him off. He bit me right in the hand and the leg. I was scared when I pulled him off because he was already growling and baring teeth. I realized that energy is key, but positive reinforcement is the best.

Same thing when I taught my Butterscotch to sit. Everytime she sat down I gave her a treat and said sit along with it. I also make her sit when shes going to get food or get a new toy. Now I don't even have to tell her to sit, and I owe it to positive reinforcement.

I agree with Giselle 100 %. No dog should be punished for something they know absolutely nothing about. Does a dog know chewing is bad ? Does a dog know that it shouldn't bite if scared? No. But if you slowly remove the fear or other powerful emotion slowly by introducing the item and rewarding any positive behavior, then the dog will learn to associate the item with a treat, or praise etc.

One episode that really pisses me off is when there was this pitty named Emily that was dog agressive and Cesar forced the dog to be submissive . He literally grabbed the dog by her neck, shoved her into the grass and had the dog panting and basically asphyxiated (SP?) the dog. I was horrified that the owners could just stand there and let Cesar choke their dog.