Also, pigs are commonly active at night. The wart hog is one exception, it grazes on the African savannah and feeds on roots. It is only active during the day and will spend the night in dens, usually the abandoned burrows of other animals. The tusks are used for defence and in conflict between males. The more prominent upper canines are primarily for display.
Most damage is inflicted by the sharper lower canines.
The facial warts that give this pig its name help protect the face during these conflicts. Two skulls of Sus scrofa , the domestic pig. Pigs have a superb sense of smell and can easily locate food buried underground. The lead edge of the snout is hardened and used to dig with. The tusks are not used for digging.