Puppy Ball on a Rope - Exercise and Reward Toy - Police K-9 - SAR - Schutzhund IPO The Nero Ball  Used Police K-9 and Military Working Dog Teams and Trainers 100% Natural Rubber Ball with Strong Nylon Rope Better Than A Regular Ball - Rope Allows You To Throw Further Strong Loop and Knot For Dogs That Won't Out New And Improved Design For Greater Durability and Strength