Lubang Island
In general, the original distribution of "S. philippensis" covered the western islands of the Philippines, while the original distribution of "S. cebifrons" covered the central and eastern islands. Specifically, the range of Philippine warty pigs included Luzon, Biliran, Samar, Leyte, Mindoro, Mindanao, Jolo, Polillo, Catanduanes, and possibly other islands. The warty pigs in Lubang Island and its outlying islands may be a distinct species. Moreover, it was formerly found in most habitats (from sea level to up to 2800 m) but is now confined to remote forests due to loss of habitat and heavy hunting by noose traps or trigger set bullets.