We bought Dylan and Dixie new balls. They hardly ever have balls because anything other than their bones, usually, get chewed up in seconds. But, these are supposed to be indestructible. We'll see how long they last. I'll keep you posted. They were so excited they kept switching. I guess to make sure the other didn't have something better. Dylan chose the method of just "going at it with his teeth" while Dixie tried the " I'm gonna lick you to death" method. Vanessa....well.... she just stayed on the stairs where she likes it. She can't be bothered with their silliness.