I think if he continues to grab her by the scruff like this he is going to create more problems. She might develope psychological problems if this continues and that will lead to worse behavior. Shock collars probably won't help in this situation. My Autumn has one but we don't use it anymore. My stepdad made me get one but now he's learned that since Autumn only barks when people come inside, the collar isn't going to help. She not a consistant barker so the shock punishment isn't going to train her.