Rottweilers take their name from Rottweil, Germany, where drover dogs descended from Roman-era cattle dogs moved herds to market and pulled butchers' carts. When railways ended that trade, the breed turned to police, guard and search work. Today's Rottweiler is a powerful, compact dog with a short black coat and rust markings, typically weighing about 75 to 135 pounds.
At home, many are affectionate, playful and fond of leaning on their people, while staying reserved with strangers. That mix of strength and a protective streak makes early socialization and consistent, reward-based training important. Adult dogs' personalities are often easier to read than a puppy's, which can help with matching, though every Rottweiler is different.