Descended from wolves, today's modern dogs have digestive tracts and nutritional needs similar to those of their wild cousins. In the wild, canines hunt plant-eating animals and devour the fresh greens in the stomach along with the meat. You can supplement your dog's diet with fresh greens in the form of wheat grass juice and its pulp.
Dogs are able to digest vegetable matter, and wheat grass packs a nutritional punch with nutrients such as biotin, magnesium, and vitamins A, C and E. The best way to get maximum nutrition for your pet is to bypass the powders and pill forms of wheat grass and juice the easily grown plant yourself. Simply pour a few ounces of juice over your dog's food and stir in some of the fresh pulp.