The Nina Ottosson by Outward Hound Dog Hide N Purple Interactive Treat Puzzle Dog Toy is a fun and engaging way to stimulate your dog's mind and problem-solving skills. This intermediate-level puzzle toy features 14 treat compartments, including hiding spots under swiveling flippers and in hollow sliding blocks. You can adjust the difficulty level by placing treats under the flippers for beginners and in the hollow blocks for a more challenging experience. The toy is made from food-safe materials that are BPA, PVC, and phthalate-free, ensuring the safety of your dog. It is also easy to clean with warm water and soap. Remember to always supervise your dog while playing with the toy and teach them how it works for optimal enjoyment and safety.