Philippine warty pigs may be seen singly, in pairs during the breeding season, or in groups of 7 to 12, consisting of a boar, several sows and young pigs. Although most active at night, they may also move around during the day. They feed on the roots, leaves and tubers of grasses and other plants, using their mobile snouts to plough the ground for such food (2).
Female Philippine warty pigs make nests in which to give birth, situated in carefully selected, concealed areas such as between the buttresses of giant trees surrounded by dense bushes (2). Litters average four to five piglets, but as many as eight may be born in a single litter (3).
Wild pigs are normally shy and retiring but can be dangerous when cornered and will vigorously defend themselves in such a situation. Females in particular can be highly defensive when protecting their young, and will attack potential predators, including people, if threatened (2) (3).