The tricky treat ball the medium makes it easy for you to keep your dog occupied with physical activity. Just put a few of his favorite treats inside it and watch him work to get them out. The positive reward encourages active behavior which in turn keeps him fit. This model of dog toy treat ball is suitable for canines between 20 and 70 lbs and you can also get it for larger or smaller dogs. The textured surface makes it easy for your pet to grip the unit with his mouth.