When either the owner or the dog shakes JW Pet Big Giggler Hard Rubber Ball for Dogs, it makes a laughing sound. Your dog can use JW Pet Big Giggler Hard Rubber Ball for Dogs to exercise its teeth and jaws. JW Pet Big Giggler Hard Rubber Ball for Dogs is a fun time inside or out! 1% natural rubber Fun giggle noise Promotes healthy teeth and gums Whimsical paw print design Great interactive toy!