The Doberman Pinscher came out of Germany in the late 1800s, created by a tax collector named Louis Dobermann who wanted a capable dog to ride along on his rounds. The result is a lean, muscular working dog with a short, glossy coat in black, red, blue or fawn with rust markings. Many in the US have cropped ears and docked tails, though natural ones are increasingly common.
At home, plenty of Dobermans are affectionate, sensitive dogs that stay close to their people. They're usually watchful with strangers and need steady socialization and reward-based training. Expect real daily exercise and mental work, plus veterinary attention to heart health, since dilated cardiomyopathy is a serious concern in the breed.