1、Interactive Play: This hanging cat practice toy hangs from the top of the door and will dance and bounce with each slap of the cat's paws.2、Adjustable: The overall length of the cord can be adjusted to 8 meters to keep your cat focused. There is a sound when the ball inside the toy is shaken.3、Function: Door hanging nouse cat toy provides exercise, keeps your cat healthy, enriches your pet's quality of life and promotes healthy relationships.4、Relieve Stress, Anxiety and Boredom: Hanging retractable cat catching mouse toy offers more than just exercise, it can relieve anxiety, stress and boredom.5、Widely Compatible: Hanging bouncing mouse cat toy can be hung on doors, window, seats and cat cages, allowing cats to play by themselves.