Interactive Rolling Dog Ball: Rolling Ball Dog Toy is the ultimate entertainment for fur babies. Just press a button and this interactive rolling ball will start spinning, moving and shaking, which will attract your dog to chase and catch it. Smart Obstacle Movement Dog Rolling Ball: Electric Rolling Ball Dog Toy Built-in intelligent motion sensor and automatic obstacle movement system, when the dog ball encounters obstacles or tight spaces, it will back up and move. So there is no need to worry about the interactive dog ball getting stuck in the corner. Three Modes Smart Cat Ball Toy: Interactive Cat Ball Toy built-in fast mode, slow mode, interactive mode. Three Modes Fast Charging: Interactive Rolling Ball Dog Toy has built-in the latest battery technology that allows it to be fully charged in just 30 minutes. One battery cycle lasts for up to 6 hours of pure joy Excellent Material: The shell of the rolling ball dog toy is made of environmentally friendly and impact-resistant ABS material, which is soft, skin-friendly. The rolling friction is strong and quiet, and will not be broken by walls or dogs and cats