Nina Ottosson's Dog Twister Plastic Interactive Dog Toy stimulates and builds confidence for your dog over time, and makes training fun for you. Hide treats under the blocks, and let your dog hunt for treats by moving one block after another in different circles. Increase the degree of difficulty by locking the blocks with bone-shaped pegs, which are placed in the hollows all around the up-side of the game. Your pup has to learn to unplug the blocks by lifting the pegs one by one in order to be able to move the blocks and then find the treats. They'll love the reward of a job well done, and you'll love watching them put on their doggy thinking cap!