SAFE AND DURABLE MATERIAL: The dog puzzle feeder is made of non-toxic BPA-free PVC material, which is durable and easy to clean with soapy water. It is strong enough to release energy for your dog freely. SLOW FEEDING: Most pets have a number of heart diseases and other health problems due to obesity. It can increase the feeding time by 6 to 9 times extend. PUZZLE LEVEL ADJUSTABLE: The dog treat dispenser can be adjusted with the sliders to set different difficulty levels for your pet, by taking down some sliders from the easier level, if you install all the sliders, it will increase it Level to the hardest for smart dogs. You can select the appropriate levels or slowly increase the difficulty for your dog. IMPROVE INTELLIGENCE IQ TRAINING: Our upgraded interactive dog toys have more food storage holes and can easily attract your pet’s attention Pulling around to try to get the treats out will help the pets’ intelligence improve and train and keep them occupied while you’re away.