Suidae is a family of artiodactyl mammals which are commonly called pigs, hogs or boars. In addition to numerous fossil species, 17 extant species are currently recognized (or 18 counting domestic pigs and wild boars separately), classified into between four and eight genera. The family includes the domestic pig, Sus scrofa domesticus or Sus domesticus, in addition to numerous species of wild pig, such as babirusas and warthogs. All suids, or swine, are native to the Old World, ranging from Asia to Europe and Africa.