The Nina Ottosson by Outward Hound Dog Brick interactive dog puzzle is a fun way to introduce dog puzzles to your pup and get them excited about problem-solving games! This Level 2 Intermediate dog puzzle keeps dogs busy with treat-focused challenges that stimulate your dog's senses and tap into their natural instincts to hunt and forage for food. As a result, our dog enrichment toys provide mental and physical exercise, help relieve stress, and reduce boredom for happier, healthier pups. The Dog Brick features multiple treat compartments to fill with treats and motivate your dog to solve the puzzle. Watch your dog use their brain to sniff out the treats, then flip open lids, slide the red sliders, and remove dog bone covers to reveal the hidden rewards! Since all dogs are unique, you can vary the level of difficulty of this dog food puzzle to meet your dog's problem-solving ability, with multiple ways to make it easier or harder for your pet. Moreover, this dog treat puzzle is easy to clean and made from food safe materials that are BPA, PVC, lead, and phthalate-free for your convenience and peace of mind.