I had experience helping a friend remotely with her tiny chihuahua who was pretty much coughing continually. First we tried “cough” frequencies with no appreciable improvement. Then, she happened to mention that the vet had said one time that continual coughing could be due to congestive heart failure. Bingo! I ran the frequencies for congestive heart failure and her little doggie was good as new in a couple of days. Hope this helps!