This lobster-shaped chew toy from trixie is a unique and fun toy for your dog. It is made of soft plush (polyester) and plastic, and has a mechanism that makes it roll irregularly when touched, stimulating the hunting instinct of your pet. The toy automatically stops after 15 seconds, saving battery life and preventing boredom. Before first use, please fully charge the toy with the included USB cable. Your dog will enjoy hours of fun with this trixie roll-up lobster chew toy. Features: Rolls unevenly when touched, stops automatically after 15 seconds Soft plush (polyester)/plastic Please fully charge before first use