The Dogness cat rolling automatic mint ball is designed to tempt and entice your cat by rolling and chirping which with help boost your cat's energy and spiritThe rolling ball automatically wanders freely while shifting speeds, while also steering around obstacles it encounters. The shifting speed motors add an extra fun effect going from fast to slow. With built in flashing LED lights the ball also rolls at the same time for irregular illumination with the added effect of realistic birds sounds.Cat mint favors safety and catch and grab bite Available in Green and white Attracts play Non-toxic Odorless Scratch resistantBattery: Two AA Battery (not included)