Dr. Seidel Snacks For Healthy Joints Are Full-Value Dog Snacks Enriched With Glucosamine And Devil’S Claw. Glucosamine Is A Natural Substance That Regenerates Joints And Rebuilds Cartilage. Devil’S Claw (Harpagophytum) Is Ised In Supportive Treatment Of Rheumatic Diseases And In Relieving Muscle And Joint Pains.