A large sized domestic dog, the Rottweiler originated in Germany. The breed has a medium length coarse coat that is black and tan in colour. Good-natured, obedient, biddable, and eager to work, the Rottweiler is a steady and fearless breed that reacts to their settings with great alertness. A powerful breed, the Rottweiler has well-developed herding and guarding instincts. With an average lifespan of 8-10 years, the Rottweiler is prone to hip dysplasia, entropion, ectropion, and Osteochondritis dissecans.