KONG Bat-A-Bout Glow’s fiber optics shine when cats tap the bowl, illuminating an irresistible undersea world rippling with a rainbow of light as the fibers move, inviting batting and satisfying nocturnal instincts. The wobbly bowl, dangling fish, and fluttery feather movements intrigue while KONG® Premium North American Catnip inside the fish extends the fun. Batteries included; on/off switch.