This makes it much easier to throw and retrieve balls for a dog who loves to chase them.  My older dog loves her large, Ultimate Kong Toy (black), but I get tired of picking it up and trying to throw it far enough to give her a workout.  The Chuckit is perfect for a good workout.  I don't know how the balls would stand up to a GSD's teeth, so I put the Chuckit away and give the Kong back when she's done enough running.