A treat dispenser in the shape of a tennis ball - great play fun that no dog can resist. Whether filled with tasty snacks or dry food, the KONG® Rewards Tennis dog toy gives a treat every time it rolls and spins. The dog quickly understands the technique and is directly rewarded for his effort. The resistant materials and unpredictable movements encourage dogs to stay busy for a long time and provide mental and physical stimulation at the same time. The funnel makes it easy to refill the toy again and again. Can also be used as an alternative to the food bowl for weight control. Note: Please never leave the pet unattended while playing. No toy is indestructible. To prevent injuries, the toy should be checked regularly for damage or loose parts and replaced if necessary.