The Polynesian Dog refers to a few extinct varieties of domesticated dogs from the islands of Polynesia. These dogs were used for both companionship and food and were introduced alongside poultry and pigs to various islands. They became extinct as a result of the crossbreeding that occurred after European breeds of dogs were introduced. Modern studies done on the DNA of the Polynesian dogs indicate that they descended from the domesticated dogs of Southeast Asia and may have shared a remote ancestor with the dingo.