From what I understand, dogs can’t handle aspirin. That it’s bad for them. It wasn’t like Dukey was in pain before, really. He got around fine. Slower, sure, but he got around. My vet told me he was arthritic. When I go to the vet my only focus is pain. “Is he in pain?” She told me “likely”. I think she might be wrong, or that it’s just normal pain and stiffness associated with aging. I’m in my 40s now. I sure as shit don’t feel like I did in my 20s. Haha