Level 4 expert dog puzzle Involves complex actions that must be completed in order, providing your pal with mental stimulation. Helps reduce dog anxiety and redirect unwanted behaviors like excessive barking, chewing, and digging in a fun and exciting way. Provides mental and physical exercise, helps relieve stress, and reduces boredom for a happier, healthier pup. It involves complex actions that must be completed in order—which encourages your dog to tap into his mental skills and solve problems right before your eyes! He’ll sniff out the treats, slide tiles, spin the wheel, and move sliders to reveal hidden rewards. You can make this puzzle easier or harder to match its difficulty level to your dog's problem-solving ability - see tips. Easy to clean Made from food safe composite materials that are BPA, PVC, lead, and phthalate-free. Brand: Nina Ottosson by Outward Hound