Description: Interactive Cat Toys: Simulate the real sounds of birds, frogs and cricket, make lifelike animals chirping sounds once playtime begins, stimulates cats instinct to hunt. Your cats will fall love with the ball. Refillable Catnip Toys：you can pour some into the toy balls, which will makes your cat crazier. Happy and Healthy Cat: The cat ball toy set with catnip and vivid animal voice, your cats will be crazy about it. Cats can’t stop playing them. When you are away from home, these ball will keep your energetic cat’s energy levels balanced and keep them busy all the time, make your cat away from loneliness. Safe To Play: These cat hunting toys are made of high quality and durable EVA, soft and safe for cats. Note: The product is equipped with button batteries, not removable, make each cat toy ball last 10,000 times of chirping. The ball will keep quiet when left alone to save battery power. Specification: Material: EVA Size: 5cm/1.97 inch Pink: Bird Sound Blue: Frog Sound Yellow: Cricket Sound Package Includes:(4 Pack) 1 Piece Cat Toy Ball