Black kong extreme black kong extreme dog toythe extreme black kong is one of the best interactive toys for any dog it has the black kong rubber formula for durability and hours of play you will find that it is used by dog professionals in training the black kong can be stuffed with treats or kong stuff and paste to keep your dog happy and busy made from black rubber kong material recommended by vets and trainers worldwidethe king kong dog chew toy ideal for power chewers one of the strongest d