Jolly Teaser Two-In-One Ball Red 10"Jolly Teaser Two In One Ball Red 10" HOURS. You may ask what we mean. Well, your dog is going to spend countless hours trying to get the ball out of the ball. No need to worry though, the inside ball isnt going anywhere. And to make it more interesting, you can put some peanut butter on the inside ball to drive them even crazier! CHASE Sure to give your dog a run for his money ENTERTAIN Ball within a ball amuses during solo play SWIM Ideal for water