After a very long walk, Yogi started limping occasionally, especially after he sits down, or takes a nap. That has been going for over 3 months. We went to the doctor, and they gave him some type of antibiotics, which made him have a bad diarrhea. They also suggested massaging his hind legs, and some type of orthopedic therapy. We didn't try any of the doctor's suggestion after the pills did not work at all. We heard somewhere about this supplement called "Recovery SA" which is also taken by human (in the form of a pill). We were skeptical, but we went ahead and bought a bottle of Recovery SA and also some salmon oil for his dinner every night. We've been giving him the supplement and salmon oil for about a month or so, and we just noticed recently that he is more agile and his limp has completely disappeared. He likes to jump more and walk more now that he's not hurting anymore. We thought we should share this with you if anyone else is having the same problem....oh we also put him on a bit of a diet (mainly we thought he might've been limping because he was overweight).