How to determine whether a puppy is a German Shepherd or an earth dog

The head of the German Shepherd is of moderate size, the length of the head is 40 percent of the body height is appropriate, the width of the forehead and the length of the head is one to two, should not be too long and too thin. The nose and neck are equal in length to the forehead, the eyes are higher in the middle than the nose and neck, i.e. the top of the eyes are higher than the nose and neck from the side, the forehead is straight with the nose and neck as a disadvantage, the upper and lower jaw of the dog is strong and powerful. The nasal bridge rises slightly in front of the upper line parallel to the upper jaw line. The head features of the native dog are closer to the appearance of its ancestor, the wolf, with a pointed mouth, a short mouth and a flat forehead. The ears are high, small and erect or semi-erect, and the semi-erect ears are semi-dropped toward the front of the head.