I would like to mention I tried this product on my senior Boston Terrier, Chester. He was slowing down a bit due to age/arthritis issues. I thought, OK I’ll try a bag and see. Well I have to say I’m completely 200% satisfied. He’s moving around much more freely and just generally seems so much happier and comfortable. I’m now on my second bag and highly recommend this product. He’s even running around playing with his ball and has periods where he’s playing like a puppy again. I’m not getting paid for this endorsement just think it’s a great product and hope others try it too!