Although there are few currently feral or domesticated dog
breeds which feature ridgebacks, there is not much speculation that either the Phu Quoc ridgeback from Phu Quoc Island, Vietnam nor the Mah Thai Lang Aan or Thai ridgeback, the royal dog of Thailand has contributed to any significant
degree, if any, to the KhoiKhoi ridgeback's primary
trait ancestry for the dorsal hair pattern in the Rhodesian ridgeback.