... pet's interest. Then you go down to the ball in the filling chunks of food, even if these foods ... playing for a long period of time, whenever the ball in from the delicious food fall out of your pet,would ... , filled with a dry food or snacks that ball, usually in 15 to 30 minutes to empty out 1 ... chase for play, exercise. 2. Built-in bells, with the movement of the ball given a clear crisp sound, the dog ...