The all new Greenies is new and improved with an all new formula. Reward your dog with clean teeth, fresh breath and loads of vitamins and minerals with every delicious treat. Formulated with an optimal blend of soy and wheat protein for ease in digestion. Toothbrush shape, tapered shaft and contoured knuckle offer a better surface for teeth cleaning. Chewier texture helps reduce plaque and keeps gums healthy. Scientifically developed in five different sizes to ensure a perfect bite based on your dog's skull type. Designed to offer complete and balanced nutrition with 52 percent protein and low in fat.