I think the sound is hurting his ears. My granddog was here for the weekend and she has asthma and gets that like horking cough and then keeps shaking her head and her ears are flopping around and I assume it's due to allergies since she had been outside. She looks funny but I feel bad for her because you can't seem to do much for her. Maybe the Vet can help. Good luck and happy dog and sewing. Sue