The maned wolf is not closely related to any other living canid. Archeologists have identified Anubis's sacred animal as an Egyptian canid, the African golden wolf. It is classified under the subfamily Caninae of the canid family Canidae. It is the second-largest native canid on the continent, after the maned wolf. Typical of most canid species, Cape foxes mate for life. The maned wolf ("Chrysocyon brachyurus") is the largest canid of South America. Bush dogs appear to be the most gregarious South American canid species. The extinct Borophaginae form one of three subfamilies found within the canid family. The culpeo is a canid intermediate in size between a red fox and a coyote. The Caninae, known as canines, are one of three subfamilies found within the canid family. The extinct Hesperocyoninae are one of three subfamilies found within the canid family. In the mandible, M1 (molar tooth) is relatively larger than in any other canid species. It is one of, if not the largest known genus of canid. It is the smallest species of canid in the world. Additionally, the Arctic fox is the only canid whose foot pads are covered in fur.