Fill the toy with your dog's favorite treats. The treats pop out as your dog plays. The built-in reward keeps your dog actively engaged in healthy play instead of destructive chewing. The squeak adds to the excitement! The squeaky sound appeals to your dog's natural prey drive. The durable rubber design has a funky bounce for games of fetch or tug-of-war. Trim the patented Treat Meter® prongs so more treats fall out.