The Phu Quoc Ridgeback (Vietnamese: Chó Phú Quốc) is a rare breed of dog from the island of Phú Quốc in Kiên Giang Province in southern Vietnam. It is one of three ridgeback breeds, the others being the Rhodesian Ridgeback and the Thai Ridgeback. It is not recognized by the Fédération Cynologique Internationale or any other major club. The Phu Quoc Ridgeback is one of the four native Vietnamese dog breeds, along with the Bắc Hà dog (Chó Bắc Hà), Lài dog (chó lài), Hmong Bobtail Dog (chó H’Mông). Medium sized with a hound shape, but with a larger head and well-developed muscles, the Phu Quoc Ridgeback is genetically and morphologically different from the Thai Ridgeback. All or part of the Phu Quoc's tongue is blue in color and the feet are webbed. Phu Quoc Ridgebacks are prized for their ability to run fast, swim well, and follow either a hot or a cold trail. As hunting dogs, they are known for their versatility, working both individually and in packs to take down a variety of prey including mice, fish, deer, and water buffalo. They also make excellent camp dogs, alerting to intruders. (Source: Wikipedia.org, CC BY-SA)