- WHISTLES WHEN THROWN: Chuckit!'s whistling ball is designed with four sound holes that create a whistling sound in the air, making fetch more exciting for dogs
- HEALTHY PLAY: For stimulating playtime that helps pets stay fit, the Chuckit! whistle ball encourages pets to leap and chase
- HIGH-BOUNCING BALL: Made from durable rubber, The Whistler fetch balls for dogs are designed to bounce higher and farther than standard tennis balls