This Is The Cartilage From Shark Spine. It Is Pure Glucosamine & Chondroitin, Which Is Known For Its Beneficial Effect On Dogs Suffering With Arthritis Or Joint & Hip Dysplasia. It Is Also Just A Great Tasting Treat Which Aids In Dental Hygiene. We Salvage Our Cartilage From Human Sourced Quotas, So No Sharks Suffer Specifically For Our Product.