Slappies Slappies! Shake, shake, shake! Dogs will love these Slappies because of the shaking action that occurs when the dog shakes the toy. When gripped by the squeaker TPR ball in the head of the toy and shaken, the arms and legs flap around, appealing to the dog’s natural instincts. Perfect for dogs with strong prey drive! The stuffless tummy enhances the flapping action and makes the toy more durable for chewers. Each toy is designed with a reusable, spiky TPR squeaker ball in the head, as well as crinkle and a squeaker in the tummy.