The Nina Ottosson Dog Worker Interactive Dog Puzzle is a challenging level 3 puzzle game that will keep your dog entertained and mentally stimulated. This interactive toy features hidden compartments under the flippers and the center wheel, where you can hide treats for your dog to find. It is made with a BPA, PVC, and phthalate-free composite material, ensuring the safety of your furry friend. With its engaging design and multiple colors available, this puzzle toy is perfect for dogs of all sizes and breeds. Let your dog's instincts shine as they hunt for hidden treats .