[Adjustable Difficulty Level] - Are you worried if this dog enrichment toy is too difficult or too easy for your pet? By removing some parts of the slider, you can simplify the puzzles of this dog; all parts of the slider, This will increase the difficulty level of these dog puzzles to hardest for smart dogs. Slowly increase the level of difficulty and find the right level to excite your pet.[ Slow Feeder ] - Over 50% of pets are obese, which directly increases the risk of heart disease and other health problems, and overfeeding has become the number one cause of obesity in pets. the domestic animals. This situation can be relieved once your pet uses this food. for dogs, it can significantly increase the duration of feeding time by 6-9 times.[ 2021 Upgraded Edetioned ] - Compared with other products on the market, our upgraded new edition dog brain stimulation toys have more food storage holes, and bright colors can instantly attract attention pets, generate more joys for your pets.[ Brain Stimulation ] - These puzzle toys for dogs can keep them busy and can improve dogs' IQ. Our puppy puzzle toys provide a fun way for dogs to treat, and this interactive game can enhance the bond between your pets, bring more positive energy to pets.[ Sustainable & Safe & amp; Easy to clean] - This large dog puzzle toy is made of non-toxic, eco-friendly and BPA-free PVC materials, durable and easy to clean. After using it, oil stains can be easily washed off with soap in cold water, rinse thoroughly then let dry naturally. Besides, the material of this dog mental stimulation toy is strong enough for daily use, let your dog release energy freely.Package Dimensions: 13.5 x 7.99 x 1.93 inches; 14.07 ounces