【High Quality】Cat toy balls are made of high quality and durable plush, soft and safe. The size is 5 x 5 x 5 cm / 2 x 2 x 2 inch, which is easy to carry and suitable for indoor and outdoor activities. They are equipped with a built-in LR41 button battery and a high-sensitivity alarm that can produce a variety of analog sounds. 【Calling Ball】The plush kitten ball can imitate the sounds of frogs, crickets, birds and other animals. Cat balls of different colors emit different sounds to stimulate the cat’s hunting instinct, which can last up to 10,000 sounds. 【Attractive】After playing opened the lid, you can add catnip to excite the cat. It can encourage cats to exercise, stimulate their thinking, and keep your cats moving and healthy. 【Smart knocking trigger】The knocking toy for cat has a built-in high sensitivity alarm, as long as the cat’s paw lightly touches the ball, it will make a sound. This kitten toy will become your cat’s best playmate, helping your cat reduce loneliness and