Features: Simulate Real Sounds of Animals: The cat toys make lifelike animal chirping sounds once playtime begins, beckoning every bat, bite, chew, and chase The 3 animal sounds are frog, cricket and bird chirping respectively. The balls keep quiet when left alone to save battery power. Catnip Can Be Added: Open the lid, you can add catnip to the ball, which can attract the cat& 39;s attention. Healthy & Fit: To encourage your Fluffy friends to do more exercise, prevent them from becoming fat and have a healthy body. The Cat toy keeps the cats active and entertained throughout the day providing great exercise for your best friend Sturdy Construction: The 3 cat toy balls are made from durable and highly resilient fluffy materials which endure each aggressive wrestle; plus,fluffy materials are soft and safe for cats. Quality Guarantee: We stand behind each product we sell. If you have any problem with the balls after receiving your order, please contact us and we will solve your problem as possible as we can. Specification: Material: EVA Weight: 12g Diameter: 50mm Notes: 1. Due to different monitors and lighting effects, the actual color may be slightly different from the image. 2. Due to manual measurement, please allow 1-3cm deviation. 1 *Chirping Balls Toy