Stimulate your pup's brain and have a blast at the same time! The Nina Ottosson Brick toy is a classic engagement toy that's loved by trainers, dogs and pet parents everywhere. Tricky and engaing as a game for you and your dog. Hide treats in the nook under the sliding discs, and let your dog look for the goodies by trying to pull the discs to the side with their paw or nose. Increase the degree of difficulty by placing the white plastic blocks in the nooks in the middle of the Dog Brick. Your pup will love the reward for a job well done, and you'll love watching them put on that doggy thinking cap!