I was at Wal-Mart the other day,and was looking for a ball for Victor. I saw these balls that were the size of a basketball but they look like a tennis ball. The same color, and the same texture. They are lighter than a basketball. It got up to 45 degrees today so I got the ball out for the first time and he had a blast!!! He was jumping, growling and hitting the ball with his head. It was so funny to watch him. I am going to have to go get another one in case something happens to this one.