Will Falconer, DVM Moderator
Hey Michael,
You're asking a homeopathic vet, so I have an answer from my place on the practice path: you'd be seeing symptoms if illness was present. That links points out common chronic disease symptoms that most people aren't aware of. We look deeper, and have a different definition of "normal" and "healthy."
You could also run some blood work, a CBC and Chem Screen, and see if all is within normal limits. Your local vet can do this easily.
All the best and my condolences for your losing Gunny.