Hello, my name is Laura and I have a 6 year old beagle, Fats. He has serious respiratory issues. I have tried just about everything, short of getting a $1200 rhinoscopy. I am at my wit's end. I have tried natural remedies, such as nettle and an oil with eucalyptus and other natural ingredients. I have changed his food to a cool digestion formula to alleviate any allergic reactions in his tummy. I have even gone as far to give him Benadryl or over the counter allergy medications with an OK by a veterinarian and given as prescribed. He has this horrible dry cough and frequently his cough will lead to gagging, if not every time. I have a humidifier in the house that runs constantly throughout the winter and I use fragrance free detergent. I am a clean person and we do not smoke in the house. HELP!!!! What else could it be? A heart condition? Do I have unknown mold somewhere in my house? Stronger allergy medicine? It's been going on for almost 3years and I don't want him to have such a hard time all the time! Thank you