The German Shepherd Dog originated in the Alsatian Region of Germany. Today it is used world wide as a sentry, police dog, tracker, drug dog, search and rescue dog, and guide dog for the blind. The official name for this breed is German Shepherd Dog
The German Shepherd Dog is unique because it has a very short colon in comparison to other breeds of the same body weight. For this reason a high fiber diet is required to slow the movement of food through this breed's digestive track, thereby allowing more time for the nutrients to be drawn out. This high fiber diet will result in a larger stool but better assimilation of the food. I caution that this fiber must be from the proper sources and the amount should be carefully controlled. Too much fiber or fiber of the wrong type can cause impacted bowels.
The environment for the Alsatian Region of Germany provided this breed with primary food sources of beef, wheat, and leafy greens like cabbage and alfalfa. Thus, its recommended a blend of these food sources as the ideal base diet for the German Shepherd. Conversely, the worst commercial food blend for the German Shepherd Dog would contain fish, soy, or rice.