If you want to the idea of 'No' across to a dog, then you need to discipline them like their Mom's did. Basically, firmly hold the loose skin behind the dogs mouth in both your hands. Shake {not too hard}, the dog's head back and forth while staring directly into her eyes and speaking to her in a low growling type voice. This is similar to how Mother dogs keep their puppies in line.
Police and guard dogs are often trained using similar methods. The idea is not to hurt the dog, but to establish dominance.
Police and guard dogs are often trained using similar methods. The idea is not to hurt the dog, but to establish dominance.