1There is a inside the grass ball. When your pet plays with it, it will make a sound to attract the pet's attentionGreat f playing nibbling, help prevent bedom.2Chewing Grass ball promotes clean healthy teeth while satisfying your pet's natural instinct to chew3Suitable f cats, rabbits small rodents pet play, but also f small pet rodent bite, Prefect f small pet toys molar tooth cleaning.4Also this product can be as funny cat stick, cat climbing frame other products.5. Hmade ribbon ball, carefully woven tied, it uses no adhesive making it extremely natural an Prefect toy f all pets. NOTE: Please let your pet not eat the .Product DescriptionCol: YellowMaterial: StrawSize: 10CM (37 inches)Package Contents:1 x BallOnly the above package content, other products are not included.Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.