GoughNut Maxx- The GoughNuts Maxx Extra Large chew toy was designed to address the simple but serious issue of SAFETY. The GoughNuts chew toys are designed knowing that safety and fun go hand in hand. Each GoughNuts pet toy has included in it's design the GoughNuts patented safety indicator where Black/Green means "GoughNuts" and Red means "Stop". The GoughNut Maxx Black is recommended only for the extreme chewer. This Chew toy will be too large for most dogs.