This big bounce is impossible to predict! Large breed pups will be kept bouncing with every crazy ricochet once the Chuckit! Erratic Ball hits the ground. It's designed to fit Chuckit! Launchers to make those lumbering limbs really get a workout, and keep your hands slobber free. No telling which way it's going to go, but one thing's for sure... it's going to be one wild game of fetch!