Our BC/Aussie loves this ball but when we initially got it I was very concerned that it might present a choking hazard. This ball gets VERY SLIPPERY when they play with it, so much so that it would often slip out of her mouth as she was running back and squeaking it. Once it has a little saliva on it, it is SLIPPERY!! Size is a little smaller than the regular Chuck-it balls, and it does work in the thrower, but if I had a big dog I would go with a different ball. I was amazed how slick it gets and even with our medium sized girl, this ball only gets used when closely supervised.