The breed is alert, energetic and quick to notice anything unusual, which makes it a keen watchdog. It is affectionate with its own household but reserved with strangers, and it can be strong-willed and persistent. Its hunting instinct remains sharp, so small animals may be treated as quarry.
In appearance it is a compact, square, muscular dog with a long wedge-shaped head, dark oval eyes and a short, dense, glossy coat that lies flat. Colours include black with red or tan markings and solid shades of red, from a light red to deep stag red. In Britain the ears are left natural, folding forward in a V, and the tail is left long.
The German Pinscher is often described as a forerunner of the Dobermann and the Miniature Pinscher, and its smooth-coated type stayed close to the farm dog of the nineteenth century. It nearly disappeared after the Second World War and was rebuilt from very few dogs, and it reached Britain and North America only in the later twentieth century, gaining American Kennel Club recognition in the early two-thousands. It was kept on farms and in stables to kill rats and other vermin and to warn of strangers.