The Common warthog (Phacochoerus africanus) is a wild member of the pig family (Suidae) found in sub-Saharan Africa. It is the only pig species that has adapted to grazing and savanna habitats.
Common warthogs are found in sub-Saharan Africa. They live in grasslands, savanna, open bushlands, and woodlands. These animals prefer open areas and avoid rainforests, thickets, cool montane grasslands, and severe deserts.
A warthog has two pairs of tusks protruding from the mouth and curving upwards. The lower pair, which is far shorter than the upper pair, becomes razor-sharp by rubbing against the upper pair every time the mouth is opened and closed. The upper canine teeth can grow to 25.5 cm (10.0 in) long and have a wide elliptical cross-section, being about 4.5 cm (1.8 in) deep and 2.5 cm (0.98 in) wide. A tusk will curve 90° or more from the root, and will not lie flat on a table, as it curves somewhat backward as it grows. The tusks are not used for digging, but are used for combat with other hogs and in defense against predators - the lower set can inflict severe wounds.
Common warthogs are social animals and live in groups called sounders. Females live in sounders with their young and with other females. Females tend to stay in their natal groups, while males leave, but stay within the home range. Subadult males associate in bachelor groups but live alone when they become adults. Adult males only join sounders during the breeding season. Common warthogs are not territorial but instead occupy a home range. They have two facial glands: the tusk gland and the sebaceous gland. They mark sleeping and feeding areas and waterholes. Common warthogs use tusk marking for courtship, antagonistic behaviors, and to establish status. They are powerful diggers and use both their snouts and feet. Whilst feeding, they often bend their front feet backward and move around on the wrists. Although they can dig their own burrows, they usually occupy abandoned burrows of other animals. When temperatures are high Common warthogs enjoy wallowing in the mud in order to cool themselves and will huddle together to get warm when the temperatures get low. Although capable of fighting, the Common warthog's primary defense is to flee by means of fast sprinting. However, if a female has any piglets, she will defend them very aggressively.
