Here's something most dog owners don't know about most joint supplements. They're usually missing the one ingredient your dog's joints are actually made of. -> Collagen. Pawable COLLAR-GEN is the only supplement that gives your dog five types of hydrolysed collagen plus UC-II — covering the cartilage, tendons and connective tissue that need it most. Sprinkle it on their dinner. That's it. Try it risk-free for 90 days. https://pawable.com/products/collagen-for-dogs