These balls are specially designed as a fun healthy way to exercise your cat/dog and get them to utilize any excess energy which may cause them to misbehave. They are great for stimulating your pet's instincts， senses and mind so that you could have a more contented pet. They are designed to help reduce the risk of your pet developing behavioral problems which may stem from fear， aggression or boredom. They keep them occupied and active as they try to retrieve their prize from the ball.Food ball toy for pet.Put some of your pet's favorite snack inside and the dog will be attracted.Made from non-toxic material， which assures your pet will have hours of safe fun.Color:BlackMaterial: PlasticDiameter: 3inch/4inchPackage inclueded:1 X Dog Feeding Ball