I have a 4 yo female lab I bought as a puppy from a reputable breeder. She has developed a fear of gunshots, fireworks etc. I can't trace her noise sensitivity to an event and I've only noticed it this year, but all summer we've had a hunt test group in the field next to ours several nights a week and the whistles and shots make her nervous. If we're outside, she wants to go in the house. Inside the house she recovers quickly. The group is about 500 yds. away so it's not even very loud. She loves to retrieve and I had hoped to at least get her JH, but I don't know if this is fixable.