I need help!! We have an approximately 9-10 yr old female boxer. We adopted her two years ago from a boxer rescue. So, we don't know her exact age or any of her history. She has been the most amazing dog for our family. Our 3 young kids have loved her deeply. However, she just attacked her 3rd dog on Friday and this time the owner of the other dog got injured (not seriously). But she is my son's friend's mom and I can tell she is now not comfortable with her son coming to our house. We feel that it is a huge time bomb waiting to go off in which something horrible could happen. We don't know what to do... my kids and their friends are in and out of our house all the time and I cannot control at every minute when the door is being opened, etc. Her aggression has only been towards dogs. But each time she has flown out of the house as soon as she spotted the other dog and went on a vicious attack. I am skeptical of training for the seriousness of her issues and because we have no idea what her history is. We feel that this is why she was at the rescue place in the first place.