Complex sentence: The AKC classifies the Standard Schnauzer as Working Dog however this versatile breed is a robust, squarely built, medium-sized dog with aristocratic bearing, making it a popular subject of painters Sir Joshua Reynolds, Albrecht Dürer and Rembrandt.
Split into simpler sentences: The AKC classifies the Standard Schnauzer as Working Dog; however, this versatile breed is a robust, squarely built, medium-sized dog with aristocratic bearing. It was a popular subject of painters Sir Joshua Reynolds, Albrecht Dürer and Rembrandt.