Dog Toy Ball Size and suitability: 2.05 inches (52 mm) diameter, designed for dogs up to 35 lbs. Not suitable for aggressive chewers. Supervise play and guide your dog to interact with the ball rather than just chewing on it to strengthen your relationship. Safe materials and comfort: Outer shell is natural plastic that is not easy to chew through. Odorless and easy to clean, it is comfortable and safe for your dog's teeth and gums. The ball also makes little noise on the floor. Interactive modes and LED: Two interaction modes Normal and Smart. When turned on, it automatically rolls, shakes, or bounces to engage your dog. The LED light activates to attract attention and promote exploration. Benefits and use scenarios: Provides mental stimulation and entertainment while encouraging physical activity. Helps reduce boredom and supports bonding between you and your dog. Practical use scenarios: 1) Indoor play for small dogs in apartments: gentle rolling and light LED cues keep your dog engaged without loud noise. 2) Mental stimulation for timid or bored dogs: dynamic movement and light attract and hold attention during quiet afternoons. 3) Training and bonding sessions: supervise play, encourage interactive interaction with the ball, and reward friendly engagement.