The ideal Boxer is a medium-sized, square-built dog of good substance with short back, strong limbs, and short, tight-fitting coat. His well-developed muscles are clean, hard, and appear smooth under taut skin. His movements denote energy. The gait is firm yet elastic, the stride free and ground-covering, the carriage proud. Developed to serve as guard, working, and companion dog, he combines strength and agility with elegance and style. His expression is alert and his temperament steadfast and tractable.