Okay, I am getting some pressure from the wife to buy another dog in the very near future. We currently have a three year old German Shepard that my wife and daughters have turned into the biggest sissy in the dog kindom. My wife thinks that we need a big dog that will protect them when i go away on Engineering projects since the Shepard will never be that type of dog. Anyone have any suggestions on what type of breed that I should be focusing on? I would like the dog to be a threat to crooks, but also be a dog that will be a good family dog especially arounds my kids. I had Boxers for many years and they are fantastic dogs, but I dont think they are very inimidating. I would appreciate any suggestions especially from people that have had a large breed dog.