Made of high-quality material. Soft little critter shakes and vibrates across the floor. Offers hours of entertainment for your cat. Dimensions: 4.13L x 6W x 2.13H in.. They may not know why the Hartz Assorted Hartz Running Rodent Cat Toy is shaking and vibrating across the floor, but they'll know that it's their job to catch him. The durable body is made from a high-quality plush material with a fuzzy exterior and long tail that will keep then interested for hours. Just pull on the tail and let the fun begin.