The GoughNuts Tug Toy was designed to address the simple but serious issue of safety. The toy was designed knowing that safety and fun go hand to mouth (a dog's jaw)! The GoughNuts Tug Toy is an interactive, tough, durable product. The GoughNuts Tug Toy is for larger dogs. The rubber is the same recipe as used on GoughNuts rings but the outside has been marked with red to show that there is not a safety indicator in this product (as again it is for interactive play versus constant chewing).