The Rhodesian Ridgeback is a large, athletic dog breed originally bred in Southern Africa, specifically Southern Rhodesia (now Zimbabwe). It is best known for the distinctive ridge of hair along its back that grows in the opposite direction from the rest of the coat. This breed was historically used for hunting and guarding, including assisting in lion hunts. They typically have a short, dense coat ranging in color from light wheaten to red wheaten, with males generally standing 26-29 inches tall and weighing about 45 kg, while females are slightly smaller. Rhodesian Ridgebacks are loyal, intelligent, and somewhat aloof with strangers, but not aggressive without cause. They require consistent training and socialization and are sensitive to rough treatment. The breed faces some health issues like hip dysplasia, dermoid sinus (a congenital neural defect), hypothyroidism, and gastric dilatation volvulus (bloat). Their lifespan is around 10 to 12 years. The ridge itself is caused by a dominant genetic mutation and is a hallmark of the breed. In essence, the Rhodesian Ridgeback is a strong, elegant, and protective dog suited for active owners experienced in training large breeds.