AUTO BOUNCE AND SQUEAK - The ball will auto makes sounds and in shaking motion for 20 sec when turn on. And activate again by aggressively shaking | FASCINATES YOUR DOGS - The bounce and squeaky motor pattern mitating a live prey. Makes dogs extremely excited to chase and bite. Satisfy natural hunting instinct | PREVENT BOREDOM - Help encourages healthy activity through play. Reduce boredom and destructive behavior | CUTE LOOK - 3 Lovely nontoxic plush covers with UPGRADED VERSION white device ball inside. The Kit contains 3 plush covers (Romas+Doggy+Taily) for replacement | EASY PLAY - 2 X AAA battery power (included). Detailed operation please see Image and Product Description. This Interactive funny toy makes your pet fondle admiringly. Enjoy having fun with it!