Thanks for all the great comments and advice! Yogi stopped his terrible hacking and coughing about six weeks ago. The vet said it would prob stop as his trachea healed and I guess he was right. So happy about this, he seems happier to, and is an active crazy little boy! I did just post about a new issue ...possible back injury but we will deal with that and do whatever we need to. Just wanted to update this. Thanks all!