Have you tried anything yet? I really think Cesar has some great methods for dealing with aggression, and I think his advice is even more important when you have more than one dog. I'm sure you've heard the words pack leader and use calm assertive behavior around the dogs, but with the Cesar method, it's best to immerse yourself into his program or book until a little light bulb goes off, and you "get it." You can rent a whole series of shows from Netflex, and he has a weekly program on the National Geographic channel, he also has a web site and books available. We also have a member Scootybooty who offers specialized training to Yorkietalk members at a discount.
LDThome