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The giant forest hog (Hylochoerus meinertzhageni), the only member of its genus, is native to wooded habitats in Africa and is generally considered the largest wild member of the pig family, Suidae; however, a few subspecies of the wild boar can reach an even larger size.

Giant forest hogs occur in west and central Africa, where they are largely restricted to the Guinean and Congolese forests. They also occur more locally in humid highlands of the Rwenzori Mountains and as far east as Mount Kenya and the Ethiopian Highlands. They are mainly found in forest-grassland mosaics, but can also be seen in wooded savanna and subalpine habitats at altitudes up to 3,800 m. They are unable to cope with low humidity or prolonged exposure to the sun, resulting in them being absent from arid regions and habitats devoid of dense cover.

The giant forest hog is mainly a herbivore, but also scavenges. It is usually considered nocturnal, but in cold periods, it is more commonly seen during daylight hours, and it may be diurnal in regions where protected from humans. They live in herds (sounders) of up to 20 animals consisting of females and their offspring, but usually also including a single old male. Females leave the sounder before giving birth and return with the piglets about a week after parturition. All members of the sounder protect the piglets, and a piglet can nurse from all females.

Source : Wikipedia