I have a boxer/pit mix that i adopted a few months ago. she is around 4 years old and has some issues that i would like to fix. one of those issues is when i take her to a dog park shes fine probably about 5 to 10 minutes then she starts to become over aggressive towards the other dogs. by this time she is so overwhelmed i can not calm her down to listen anymore. Ive tried positive reinforcement, time outs, ive tried keeping her on her leash/gentle leader, ive even just let her watch on the other side of the fence but she just go nuts either way. how do i go about training her to calm down and not be so aggressive with the other animals????