Ohh Carrie - terrific advice there. Those were exactly the same things my behaviorist told me when I had her come evaluate my dogs. (They were not aggressive with me at any time, just each other) I just want to stress that the methods Carrie outlined absolutely work.

That being said, these types of problems do not magically disappear. They take constant vigilance. Even though in my house, we have learned to co-exist fairly well - it is because I have learned to read the dogs language and moods. I am constantly aware of any possible triggers. I feed them separately; I never ever give them treats unless they are separated. I never let them outside to play together unless I am watching them. I have to shut the cat in another room when I am not home (Penny wants to chase the cat, Leo wants to protect the cat). Even though I don't separate them all the time, if I feel one or the other is in a pissy mood; I will close them off in separate areas. (Baby Gates are my best friend).

I guess the point I am trying to make is it takes a great deal of commitment and work to solve these kinds of problems. I would strongly suggest your friend contact an animal behaviorist/trainer and get some personal guidance. I have to tell you it was the best $75 I ever spent. There are also a couple of booklets I would recommend by Patricia McConnell - "How To Be Leader Of The Pack...and Have Your Dogs Love You For It" and "Feeling Outnumbered? How To Manage and Enjoy Your Multi-Dog Household".

I also strongly second NO ALPHA ROLLING. Trying to do this with an aggressive dog is just asking for trouble.