Designing for fun: This butterfly teaser toy can activate your cat’s prey instinct for rewarding interactive play sessions 360 Degree Rotation: The flash butterfly can rotate 360 degrees. And this butterfly spins constantly, your cat can play with it when you’re away. Two butterfly refills: The toy is equipped with two spare butterflies, so your cat can play with it for a long time. Requires 3 AA batteries (not included) Healthy for Cats: Adds much-needed exercise for your cat to keep it healthy, especially if it’s an indoor feline.