Giving 1 Piece of these Fully Digestible Bones & Cartilage Before Bedtime as a Toothsome Toothbrush Will Keep Your Pup’s Smile Sparkly. Their Hardness Scrapes & Cleans Teeth while also Providing Mental Stimulation. Last but Not Least, they Contain the Collagen, Gelatin & Base Minerals Dogs Require to Coat & Protect their Digestive Systems & Joints against the Harmful Effects of Stomach Acid & Inflammation. Plus, Using Tail-to-Snout Respects the Whole Animal & All the Goodness It Provides! Bonne Nuit & Sweet Dreams for Everyone!