Not what I expected
Other reviews said their dogs destroyed or got the tennis ball out right away. My 8 month old, 12 lb. PooChon did neither. He's had the toy for more than a week, and there's no damage. That said, PooChons are not aggressive chewers. He is very inquisitive and playful.
I would not recommend this for an aggressive chewer as the plastic is soft.
I was disappointed because I "assumed" the tennis ball rolled inside of the curve, but mine did not. This meant my pup wasn't well entertained and disgarded it quickly for his all time favorite, the empty water bottle.