The Thai Ridgeback is a dog from Thailand. The Thai Ridgeback is one of only three breeds that has a ridge of hair that runs along its back in the opposite direction to the rest of the coat. The other two are the Rhodesian Ridgeback and the Phu Quoc Ridgeback.

The Rhodesian Ridgeback is a large dog breed originally bred in Southern Africa. The original breed standard was drafted by F.R. Barnes, in Bulawayo, Southern Rhodesia, in 1922, and approved by the South African Kennel Union in 1927. Its forebears can be traced to the semi-domesticated ridged hunting and guardian dogs of the Khoikhoi. These were interbred with European dogs by the early colonists of the Cape Colony for assisting in the hunting of lions.