Rottweilers take their name from Rottweil, a market town in Germany, where descendants of Roman-era cattle dogs drove herds to market and pulled butchers' carts. When railways ended that trade, the breed moved into police, search and guard work. The result is a powerful, compact dog, usually 75 to 135 pounds, with a short black coat, rust markings and a calm, watchful look.
At home, many Rottweilers are affectionate, playful and happy to lean against their people, while staying reserved with strangers. That mix of strength, confidence and a protective streak makes early socialization and steady, reward-based training important. Dogs vary, though, and adult Rotties often arrive with a temperament you can already see, which makes matching a dog to your household easier. The short coat needs little more than weekly brushing, but the black color means heat planning is part of the daily routine.