This level 4 puzzle requires your dog to complete a series of steps in the correct order to keep discovering more hidden treats! Dog treat puzzles are a great way to reduce boredom and provide mental enrichment for your pup. Between the moveable green tiles, spinning wheel, orange locks, and center sliders, it is 4 Challenges in 1 puzzle.For an extra challenge, put the ridged orange locks in place to secure the green square tiles.