A German Shepherd Dog is a trotting dog, and its structure has been developed to meet the requirements of its work. General Impression-- The gait is outreaching, elastic, seemingly without effort, smooth and rhythmic, covering the maximum amount of ground with the minimum number of steps. At a walk it covers a great deal of ground, with long stride of both hind legs and forelegs. At a trot the dog covers still more ground with even longer stride, and moves powerfully but easily, with coordination and balance so that the gait appears to be the steady motion of a well-lubricated machine. The feet travel close to the ground on both forward reach and backward push. In order to achieve ideal movement of this kind, there must be good muscular development and ligamentation. The hindquarters deliver, through the back, a powerful forward thrust which slightly lifts the whole animal and drives the body forward. Reaching far under, and passing the imprint left by the front foot, the hind foot takes hold of the ground; then hock, stifle and upper thigh come into play and sweep back, the stroke of the hind leg finishing with the foot still close to the ground in a smooth follow-through. The overreach of the hindquarter usually necessitates one hind foot passing outside and the other hind foot passing inside the track of the forefeet, and such action is not faulty unless the locomotion is crabwise with the dog’s body sideways out of the normal straight line. Transmission---The typical smooth, flowing gait is maintained with great strength and firmness of back. The whole effort of the hindquarter is transmitted to the forequarter through the loin, back and withers. At full trot, the back must remain firm and level without sway, roll, whip or roach. Unlevel topline with withers lower than the hip is a fault. To compensate for the forward motion imparted by the hindquarters, the shoulder should open to its full extent. The forelegs should reach out close to the ground in a long stride in harmony with that of the hindquarters. The dog does not track on widely separated parallel lines, but brings the feet inward toward the middle line of the body when trotting, in order to maintain balance. The feet track closely but do not strike or cross over. Viewed from the front, the front legs function from the shoulder joint to the pad in a straight line. Viewed from the rear, the hind legs function from the hip joint to the pad in a straight line. Faults of gait, whether from front, rear or side, are to be considered very serious faults.