My friend's dog is a 1 year old Bernese Mountain dog that they got from a breeder when she was 8 weeks old. They are very loving with her and give her a TON of attention. She is very skittish of new people and new surroundings. They have spent months with her in dog classes and working on socializing her by taking her to parks and businesses etc. She has maybe gotten a little better but not much. She still shakes, her tail is down between her legs and she barks at those around her. Has anyone else experienced this with a large breed dog or a Berner?