The Teaser Ball features a unique ball-within-a-ball design that will drive your dog bonkers. This rigid ball is perfect to keep your dog entertained as it rolls and wobbles erratically. Watch as your dog lunges, chases and chomps trying to get the inner ball out. 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!