K9BK - K9 Kup Black/Red (Work to eat design)GoughNuts K9 Kup Black- GoughNuts products are designed knowing that safety and fun go hand in hand. The GoughNuts K9 Kup Black is designed as a "work to eat" product and also general interactive play. The K9 Kup is multi-colored with red and therefore there is not a red indicator as part of the design. All GoughNuts products are Guaranteed. Please monitor all products and please remove damaged toys from dog The GoughNuts K9 Kup is an interactive toy, not for constant chewing. Our Original GoughNut ring designs are the most durable design and should be used for power chewing. This Black K9 Kup is our most durable in the K9 Kup Line. If you have a Guide Dog this is the K9 Kup approved when needed for training.