Multifunctional Dog Toy-Tumbler design with rollers. This interactive dog toy will move back and forth under external force, and when the body of the toy is tilted, the dog treats will fall out of the hole. Dogs will think, learn and eat during play and will very very happy with the snack rewards (No battery required)More Durable & Safe-Made of eco-friendly ABS plastic, extremely durable, hard to break, non-toxic, safe to play and suitable for all size of dogs and cats. After thousands of tests, we can guarantee that this treat dispensing toy will not have potential risk such as small parts falling off when playing(To prolong the life of the toy, please avoid dropping it from a high place or hitting it hard).Why Your Dog Need It?-Relieve Stress And Promote Health: This dog puzzle toy can improve your dog& 39;s intelligence, slow down eating speed, keep healthy diet and reasonably control the dog& 39;s weight. Also act as a good companion, helps relieve stress, depressions and separation anxieties. Effectively enhance the relationship betwwen pet and you, let your pet more enjoy leisure time with youFor Most Pets & Occasions-Size: 11.8*13.888cm. Moderate size and lightweight, low difficulty, suitable for small/ medium dogs and cats that don& 39;t chew excessively. Easy to carry, suitable for use on indoor/outdoor flat floors.Tips: Not recommended for large pets with strong bite force.