Like other wild pigs, the red river hog has a broad, omnivorous diet, and spends most of its adult life in search of food (2) (4). This species is usually active at night, returning to a burrow excavated amongst dense vegetation during the day (6), although in forests and shaded areas individuals may also forage during the morning and evening (4). Food is located using the sensitive, disc-like snout, which identifies edible material by both touch and smell, and also serves as a plough for rooting up vegetation (4) (6). Roots, berries and fruits are the most common sources of food, although small mammals, reptiles, young birds eggs and carrion may all be eaten when available (4) (6).
The red river hog is highly sociable, and forms family groups, usually of four to six individuals, led by a dominant male (5). Groups normally avoid one another, giving ritualised aggressive displays and occasionally fighting when encounters occur, although wandering groups of over 50 individuals have also been known to form (5) (6). Frequently used paths are marked with scented secretions from facial glands as well as gouges in tree bark made with the tusks (4) (6). Breeding takes place from September to April, with a peak in births during the warm, wet summer season between November and February. After a gestation period of around four months, three to four piglets are born, which are initially protected within a large nest of grass, three metres across and one metre deep (6). After leaving the nest the piglets join the family group and are protected by the dominant male (5). The red river hog reaches sexual maturity at three years and can live for between ten and fifteen years (2) (6).