PetSafe Busy Buddy Bouncy Bone Dog Toy DURABLE: Tough nylon and natural rubber to stand up to aggressive chewing; Hard chew strength is suitable even for determined chewers REDIRECT CHEWING INSTINCT: Helps redirect potentially destructive chewing behavior into positive playtime TASTY TREATS: Toy comes with 6 free natural rawhide Petsafe Busy Buddy treat rings; Refillable: Uses size C treat ring refills, sold separately EXTEND PLAYTIME: Nylon bone and rubber ball firmly grip Busy Buddy treat rings to keep dogs motivated to play longer SIZE INFORMATION: For dogs over 75 lb. and over 6 months DISHWASHER SAFE: Top rack only HERE TO HELP: Call, email or chat with our expert U.S.-based customer care specialists Monday through Saturday at 1-800-845-3274 or ccc3@petsafe.net; they are ready to assist you and your pet EXPERIENCE: PetSafe has been an industry leading U.S. manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year