Designed with the likeness of his brother, the Monster Mouth, the Monster Ball Dog Fetch Toy is unevenly weighted so when he bounces, he bounces everywhere. Designed for erratic, unpredictable bouncing, this treat-dispensing pet toy is sure to have your dog on their toes. While your pet tries to get the treats out from inside the Monster Mouth, their teeth and gums are cleaned and massaged by the different sized rubber teeth on the toy.