Funny cat ball specifications: single weight: 12g, size: 50mm, material: EVA. Simulate the real sounds of animals: three different sounds, frogs, crickets, and birds; smart touch sounds, about 10,000 sounds. (Reminder: When there is no sound, please slam the bottom plate vigorously to solve the problem of no sound. If the problem is not solved, contact us and we can help you solve the problem.) Catnip can be added: Open the lid, you can add catnip to the ball, which can attract the cat’sAttention. (Does not include Catnip) Cat interactive toys: The cry of animals can more effectively stimulate the cat’s hunting instinct, and the gift of cat toy can better attract the cat. Healthy choice: Obesity is a hidden danger of cat disease. Let your cat exercise and stay healthy by your side. (Reminder: When there is no sound, please slam the bottom plate vigorously to solve the problem of no sound. If the problem is not solved, contact us and we can help you solve the problem.) Funny cat ball