I have been reading about Goldie and am sooo happy to hear the Meds are working. I know the feeling to have an elder pup feel younger again. My girl changed overnight, well three days, and she has been on her anitiflammatories for 3 years, she gets a wellness test every year because it can be hard on them, but she is doing great. We did a test for 10 days on and 10 days off just incase it was an acute problem, but because of her surgery on her knees it was cronic . I have a happy playful 13 year old. I think Angus might be a candidate for this. He is so beautiful with his greying mussel. Hope both your furbabies stay pups for years to come.