This is a USB rechargeable, self-moving ball. My dog is a bit timid, so he just watched it. There are no bite marks, but since it's a ball that rotates and bumps into walls, it has a slightly dirty look and some minor scratches. Operation has been confirmed. *Please see my profile. *Please understand that this is a used item. Dog ball with LED light function. - Brand: Cheerble - Model Name: W1 - Color: Green - Accessories: Instruction manual, USB cable - Features: LED light function Thank you for looking.