HOURS. You may ask what we mean. Well, you're dog is going to spend countless hours trying to get the ball out of the ball. No need to worry though, the inside ball isn't going anywhere. And to make it more interesting, you can put some peanut butter on the inside ball to drive them even crazier!
Medium 6" - Recommended for dogs 20-60 pounds Large 8" - Recommended for dogs over 60 pounds