The Jolly Pets Monster Ball Treat-Inserting and Freezing Bounce and Fetch Rubber Dog Toy is Part ball, part treat dispenser, part “monster” fun! The Jolly Monster Ball is a versatile toy designed with an integrated flexible mouth opening so you can stuff treats or kibble inside its hollow center. As your dog nudges and chases it, the Monster Ball bounces in unpredictable ways and occasionally releases a treat as a reward. Its textured rubber surface also helps clean your dog’s teeth as they chew. Small but mighty, this toy offers chew, fetch, and treat-hunt fun all in one durable, awesomely goofy ball. Available in Multiple Sizes