i understant this. i understand the time it takes to rehab an abused rottie. you aren't hearing me. time is not the problem, straight out dog agression is. I live in a very dog friendly city. We cannot go for a walk without there being other dogs. Harley will go after them regardless of his prong collar or any commands. I very much understand the breed standard. You're getting fairly insulting with insinutating that I don't understand simple ideas with a rottie. I asked for help here with an agressive rottie that I can't control according to my history with the breed. One last time. I have had agressive/dominant rotties many times. I have never had to even try a prong collar. I have corrected every behavior with positive reinforcemnt. Harley ignores positive reinforcement and negative reinforcement when it comes to most other dogs. This is not a question of how long I am his current owner. He had 2 before me. I have to both correct his prior learning and give him a new mindset. I asked for help on here to correct that mindset, not to be insulted as if I was a first time dog owner.Almost all the Rottweilers that I have owned....could be dog aggressive. It's part of the breed standard. You have to teach him to ignore other dogs and the video shows what to do quite well. About face is good, and teaching a good "leave it" command will help. You've not had the dog long...this type of training takes time. Just because you walk him on a prong does not mean that it will teach him not to go after a dog. It will help you control him. You have to be able to read his body language...once he's riled up...is not the time to try to stop his behavior.
I really think you need a trainer that has some experience with working breeds that can help you. He is also not being protective...he's just being a jerk.