The Nina Ottosson by Outward Hound Dog Brick level 2 puzzle dog game will keep your dog entertained for hours as they use their natural hunting skills to seek out the hidden treats! This toy comes with 3 easy-to-fill compartments to hide your dog's favorite treats and snacks in. Flip lip compartments open up to reveal the first compartment and can also slides to reveal a hidden second compartment underneath. White, hollow brick-style bones hide the third compartment and can be easily lifted out to place yummy treats! This puzzle is ideal for pups who have already mastered level 1 of the Nina Ottosson puzzle line and are ready to take it.