The Nerf Dog Squeaker ball is made to last, even with constant use. This rubber ball dog toy is highly durable, able to stand up to throwing, landing, bouncing, chewing and more. So get in the game and have some fun with your furry friend! 4.25 inch diameter. We are a Pet Business Industry Recognition Awards Winner in the Dog Toys Category! Pet Business honors the industry's biggest standout products with their Industry Recognition Awards (IRA). The IRAs are selected by the Pet Business editors after scouring the industry for the best and brightest products on the market.