White-lipped peccaries are similar in appearance to pigs, but covered in dark hair (except on certain regions, such as the throat, where it is cream).

Not all disappearances are explained, but human activities play a role, with two major threats being deforestation and hunting; the latter is very common in rural areas, although it can be dangerous, as white-lipped peccaries can be aggressive.

[8] Fossils from the Late Pleistocene suggest a different distribution during this time, being mostly found in more southern areas (such as the Buenos Aires Province of Argentina).

Based on the other species that coexisted with it during this period, the central-northern Buenos Aires Province was likely arid or semi-arid in the Late Pleistocene.

[10] The white-lipped peccary is a piglike ungulate, covered in dark hair, which is cream on certain parts of the underside, such as the throat and pelvic regions.

[10] The white-lipped peccary is native to Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, and Venezuela.

[12] Studies by the International Union for Conservation of Nature found similar information, with a reported decline of 89% in Costa Rica and 84% in Mexico and Guatemala.

[12] The average group size in a fragmented area of the Atlantic Forest was found to be around 42, although herds frequently come into contact with one another and interbreed.

[6] They can produce screaming noises and clack their teeth when they travel in herds, which allows them to be heard from hundreds of meters away facilitating “group coherence” and intimidating potential predators.

In common with other peccaries, GBIF writes that "their vocal repertoire includes low-frequency barking, growling, moaning, high-pitched squealing, and tooth clacking.

When their habitat becomes fragmented, they are at more risk of being hunted by humans, as their tendency to move in large herds makes them easy to spot.

Their population has declined about 30% in the last 18 years, with current estimates suggesting a similar trend going into the future.

[13] The white-lipped peccary already occurs in multiple protected areas, including the World Land Trust supported Güisayote Biological Reserve in Honduras[18] and Manú National Park of Peru.

Their meat, which is described by the Food and Agriculture Organization of the United Nations (FAO) as "white" and "abundant" is sold and consumed in rural communities, where peccaries (both white-lipped and collared) are important game animals.

[1][5] While easy to locate, due to their loud nature and tendency to travel in herds, white-lipped peccaries can be dangerous to hunt—they are known to kill dogs—and are typically hunted in groups.