KONG Senior Dog Toy. Finally a KONG toy just for senior dogs! Made with a gentle rubber formula that is easy on older teeth and jaw muscles, the KONG Senior Dog Toy is a great way to help your senior dog feel like a puppy again. The KONG Senior Dog Toy reestablishes play and exercise behavior that can be beneficial to your dog both mentally and physically. Use with KONG Stuff'N Treats (sold separately) or peanut butter for added interest and prolonged activity. KONG rubber is non-toxic, non-splintering, and does not get sharp when chewed. Widely used for therapy and prevention of boredom, separation anxiety and other behavioral issues, KONG chew toys are enthusiastically used and recommended by veterinarians, trainers, dog professionals and satisfied customers world wide. Keep your senior dog young at heart and active with this specially formulated rubber chew toy and treat dispenser. Also suitable for young puppies, teething small breeds. See our puppy option.