Mia is a sweet dog, she has been fearful of many things since she was a puppy and I suspect that this might be where her aggression comes from. She acts fearful of many things outside, will start growling if other dogs are near her, especially females. She is bonded to Tyson but they have even had some terrible fights. I have tried behavior modification exercises but it did not help. The fights are terrible and I am afraid they will get injured. We have thought about this for a long time and believe it is the best decision for Mia.