Ethical Pet Lattice Balls Cat Toys (4-Pack) – Four hollow plastic balls with lattice-style cutouts and jingling bells inside each one. These lightweight, multi-colored balls roll easily and the bell sounds encourage cats to swat, chase, and play fetch. The open design also lets clever kitties pick them up with their teeth or claws. They’re a timeless cat toy that offers auditory and physical stimulation, keeping cats active as they bat the noisy, rolling balls around the house.