Hello! Our corgi came to live with us nine days ago and he's a senior of nine. He just completed heart worm treatment and was on bed rest for some time. Upon reading his medical file, I noticed that a couple of weeks ago he had a large mass removed from his left side. The area was closed with staples. I noticed today that he has a large knot about the size of a golf ball on the same side. He recently completed heart worm treatment and has had some residual side effects such as wheezing. Does anyone have any experience in this area? He was just checked last Monday for his wheezing and the vet reported that he can have a little cough syrup to minimize it. I hate to become a Munchhausen Syndrome pet owner so I wanted to find out if anyone has any suggestions? Thanks!