Since there are a lot of dog lovers on this forum, I'm asking this question. I need a dog trainer specifically who deals with Shepards. Do you know of anybody who can help me? I have a border collie/ German Shepard mix whose herding is becoming a big problem. She lunges at cars,people, and other dogs. I've had her at big dog park and she growls at other dogs and if they run, she runs after them and will nip them. I had better luck at small dog park where I can play fetch with her. But yesterday, a big dog came in and she nipped at that dog. She lunges at walkers , especially at joggers going the opposite directions. I need help! Any POSITVE recommendations are much appreciated!