OK I am not sure what is causing your little guy to cough but I will tell you what is happening with my little guy Moose. Moose started out with a dry-heaving type cough. We had no idea what it could be. He was about 6.5 years old @ the time and nothing has changed in the room. We don't use cedar chips. We took him to the vet only to find out that he has an enlarged heart. I don't know how common this is, but he is getting the animal version of Lasix called Furosemide two times a day at 0.3 ml doses. I would suggest if the cough keeps up, have the vet look for liquid around the lungs and heart. The lasix helps! [Posted in FML 5648]