You need to look into the traits of the breeds before you acquire them. You cannot just give them back. You need to assert your dominance, be very strict but not aggressive. Putting them in the submissive position will certainly help when they start to get aggressive, but this is only easy when they are smaller and weaker than you.
Make sure you eat before the puppy eats and it is a good idea to pretend to eat some of their food before they get it as the pack leader always eats first. Most importantly go to classes and keep up the training and exercise at home. A tired dog is less likely to want to be aggressive. ... View related article.
