The P.L.A.Y. Wobble Ball Toy is a treat dispensing toy which will provide hours of interactive fun and enrichment for your dog. Simply put a treat in and reward your dog for their persistence and intelligence! Made using tough and durable Polycarbonate and ABS thermoplastic Uniquely shaped to roll around unpredictably and coupled with the sound and sight of dog treats spinning inside, this toy is sure to tease and captivate man's best friend Certified 100% dishwasher safe Designed with strong threading to allow parts to be easily cleaned and to stay secure when in use Provides your pup with hours of stimulating interactive fun Comes with 3 cloud-shaped openings for easy insertion and removal of treats. The sizes of the openings range from 1.2" x 0.75" (smallest) to 1.55" x 1.0" (largest) The Wobble Ball Toy is not a chew or fetch toy, but a fun interactive play toy for your pup. Supervise your dog while playing. If you have an aggressive chewer, we do not recommend this toy.