Couldn't recommend it more!
I bought this for my German Shepherd's second birthday, after reading the reviews, and we certainly weren't disappointed. My GSD needs a good run every day and he wears himself out with the running egg. He did get a bit over excited and bit his tounge, drawing blood, trying to pick it up, but that was through no fault of the toy. In the end I had to use it for outdoors only as he spent so much time screaming at it haha. Highly recommended!