We have two young dogs with strong jaws; a Chocolate Lab & a French Bulldog. Ringball is their favorite toy. It has held up to daily games of tug-of-war, fetch & good chew time. They finally broke the circle after months of play. I personally think the dogs thought this was the goal. They did sort of a victory dance when it broke. Now they still have the ball segments to play with & have great fun flipping them up in the air. I really love that this toy is non-toxic & upcycled "real" tennis balls.