I give Visa a glucosamine and shark cartilage supplement. Shark cartilage is actually supposed to be better than glucoasmine and chondroitin. I think the stuff I use is called Pet Wonders or something like that. And it's a reputable company, they only use cartilage from common sharks and don't kill them in large amounts. I gave these supplements to Visa during her pregnancy so I'm sure Solo's joints will be very good.