Greenies Senior dental chews, specially made for dogs 7 years or older, have the same benefits as Greenies dental chews, but with the added benefit to help maintain limber, healthy joints.  Greenies Senior dental chews also contain added natural sources of antioxidants to promote a healthy immune system, as well as natural sources of dietary fiber for digestibility. Plus, the new recipe now carries the Veterinary Oral Health Council (VOHC) Seal of Acceptance.