I have a 8-10 year old beagle mix that I adopted about 2 years ago (I adopted him from the pound thats why I dont know his true age) When we got Earl, he had a cough that would come and go. As we've had him over the years this cough has gotten progressively worse and worse. Its gotten to the point where he now coughs almost all the time except when he sleeps. I have taken him to the vet repeatedly over the years and have had all the tests, a chest xray and so on. Hes been diagnosed with a collapsed trachea, congestive heart failure, lung worm, and the most recent diagnoses is asthma. He has been treated for all of these conditions with no real improvement and again he seems to be getting worse. I am currently occasionally giving him benadryl but all that seems to do is knock him out and doesnt really affect the coughing. I just wanted to post this to see if anyone out there had any ideas as to what this could be? Again here are his symptoms, a dry hacking cough that comes in spells, recently almost constantly. Occasionally he will work himself to the point of gagging. I love this dog with all my heart and can only imagine how exhausting this must be to him so if anyone has any ideas I would greatly appreciate it.