Seems my canine boy has aspirations of becoming a weightlifter. That blue thing in his mouth in the picture is a 5lb. weight that I left on the floor of the office. Apparently it had the right shape and foam covering to be a perfect dog toy and he most certainly was not interested in my demands that he stop slobbering all over the thing and give it back to me. He was prancing all over the place with it. He was so good with the 5lb dumbell we let him try the 8lb one. Not for long, but he did all right with that too.