Wildlife Clinic

Species

Wild pig

Sus scrofa

A clever, adaptable pig brought to North America by people, now living wild across much of the South.

A bristly brown wild pig standing between two tree trunks in autumn woodland, facing the camera.

Photo Byrdyak (opens in a new tab) / Wikimedia Commons, CC BY-SA 4.0 (opens in a new tab)

At a glance

Size
Body about 1.3 to 1.8 m long; about 60 to 90 cm tall at the shoulder
Weight
Usually about 40 to 110 kg; large males can be heavier
Habitat
Forests, swamps, river bottoms, farmland and brushland
Diet
Roots, tubers, acorns, fruit, grasses, insects, worms, eggs, small animals and carrion
Active
Mostly night and dusk, especially where hunted
Shelter
Beds of grass and brush in thick cover; wallows in mud
Origin
Descended from domestic pigs and Eurasian wild boar brought by people
Rabies vector
No

Identification

Key marks
Stocky body; long snout ending in a flat disc; coarse, bristly hair in black, brown, red or mixed colours; small eyes; males have curved tusks
Signs
Large areas of rooted-up soil; muddy wallows; rubs on trees
Told apart from
Domestic pigs, which are usually larger, less bristly and pinker, though feral pigs vary
Where to look
Bottomland forests and farmland across much of Georgia; signs of rooting are far more often seen than the animals

Behaviour

Wild pigs live in groups called sounders, made up of related females and their young; adult males usually travel alone and join sounders to mate. They are highly intelligent, learn quickly and change their habits when disturbed, becoming more active at night where they are hunted.

They root through the soil with their snouts for food, and wallow in mud to cool off and protect their skin, as they have no sweat glands.

In the Southeast their ancestors include pigs brought by Spanish expeditions in the 1500s, later domestic pigs that went wild, and Eurasian wild boar released for hunting.

Why they matter

Wild pigs are intelligent, sociable animals with deep family bonds, and their ability to thrive almost anywhere is a mark of how capable they are.

They are also an introduced animal whose rooting damages farmland, forest floors, wetlands and the nests of ground-nesting birds and turtles, and which can spread diseases to livestock, pets and people. That problem was made by people moving pigs; the animals are living as pigs do.

Reproduction and lifecycle

Breeding — all year, often with peaks in winter and summer
Gestation — about 114 days
Litter — usually four to eight piglets, born in a grass nest
Weaning — at about three months old
Maturity — females can breed at six to eight months old
Litters per year — up to two
Lifespan — several years

Living around people

  • Never feed wild pigs; it draws them close to homes and makes them bolder.
  • Keep dogs away from wild pigs; a cornered pig or a sow with piglets can injure a dog seriously.
  • Wear gloves when handling a dead wild pig; they can carry diseases such as brucellosis.
  • Secure rubbish, pet food and compost to keep them from visiting.

Misconceptions

  • Wild pigs are native wildlife. They are descended from pigs brought by people.
  • Wild pigs are stupid. They are among the most intelligent animals in the forest.
  • Wild pigs are villains. They are pigs, living where people put them.

Related species

Seasonal activity

When this species is breeding, and when there are nests on the ground. Mowing during the shaded months is how most nests are found.

Breeding and active nests by month for this species
JanFebMarAprMayJunJulAugSepOctNovDec
BreedingJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
Active nestsJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
NotesSounders feed on acorns and rootsBreeding can occur year-roundPiglets born in grass nestsRooting increases in soft spring soilPiglets follow the sounderWallowing increases in heatMore active at night in hot weatherPiglets weanedFeeding on early acorns and cropsAcorn crop draws pigs into oak woodsBreedingFeeding heavily on acorns

Where it lives

Recorded in 25 states and provinces. Each one links to the other animals there, and to the rehabilitators licensed for them.

If you found one

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