JW® Pet Cataction® Fish Ball Cat Toy is a colorful plastic ball with rattle beads and bright colorful fish inside. Perfect to roll, bat, swat, and PLAY. This stimulating, durable toy will engage cats' natural instincts to POUNCE. With its enticing rattle sound and fast rolling action, the Fish Ball keeps cats entertained for extended play time. Fast rolling action encourages the natural instinct to pounce. This cat toy is 2 inches in diameter and made of durable rubber.