Feral Swine

Roughly 20 percent population growth a year, and that number is the whole story. Sows can begin breeding before six months of age on a high-quality diet, typically produce one litter a year and sometimes two where nutrition allows, and average 3 to 8 piglets per litter with up to 13 documented. Under favorable conditions the population grows about 20 percent annually. Every state regulation on feral swine follows from that arithmetic. States do not set closed seasons or bag limits on an animal reproducing at that rate, and even California, the one state that requires a license and a validation, imposes no bag limit and no closed season. The legal posture across all five regions is removal, not management.

Coloration is not reliable

Coloration is not a reliable identifier, and that is itself the tell. Extensive crossbreeding with escaped domestic swine produces white, black, brown, and red in almost any combination, frequently blotched or spotted. If a hog-shaped animal is an unexpected color or pattern, that does not rule out feral swine. It practically confirms it.

How heavy they get

Adults run 75 to 250 pounds on average, with some individuals reaching roughly double that. Up to about 3 feet at the shoulder and about 5 feet long. Boars are larger than sows.

Build separates feral from domestic

Build separates a feral hog from a domestic one. Feral swine are thinner than domestic hogs, carry a thicker hide of coarse bristly hair, and have longer tusks. Tusks typically run 3 to 5 inches and can reach 9 inches, growing continuously in males.

Tracks are blunter and squarer than a deer's

Both animals leave cloven-hoof prints, but a deer track is more pointed and heart-shaped. That is the most useful distinction when the animal itself is not present.

Javelina is a separate species

Javelina is the one look-alike that matters, and it is a separate species. Where South Central range overlaps, Texas especially, javelina (collared peccary, Pecari tajacu) gets mistaken for feral swine. The tells are clear once you know them. Javelina weigh 30 to 55 pounds against feral swine's 75 to 250 and up, are grizzled brown-black with a pale collar of hair around the neck, have small rounded ears, no visible tail, and a squarish body. Feral swine are larger, far more variable in color, have longer pointed ears, and a clearly visible tail, which is why the distinction is worth settling before acting.

Sounders mean you are counting wrong

Females and offspring travel in matriarchal groups called sounders. Adult males are typically solitary outside breeding. One hog on a game camera at night usually is not one hog on the property.

Set the scale first

National damage estimates run between $1.5 billion and $2.5 billion a year. USDA APHIS puts annual damages and control costs at $1.5 billion. The Internet Center for Wildlife Damage Management puts it at $2.5 billion. A more recent USDA Natural Resources Conservation Service estimate, using a wider scope, runs as high as $3.4 billion a year. The methodologies differ, some counting direct agricultural loss and others counting total damage plus control cost, so the honest figure is a range rather than one number.

Rooting is the signature damage

Rooting and grubbing is the signature damage, and it scales from a few square feet to several hundred. Feral swine dig up ground going after roots, tubers, and invertebrates, turning over lawns, pastures, crops, and golf courses.

Wallows near water

Wallows, which are muddy depressions near water. Feral swine use them to cool off in hot weather. Trampled, compacted soil around a pond or creek edge usually accompanies them.

Rub marks on fence posts and structures

Hogs use them as scratching posts, and the rubbing itself can damage the fencing.

Blunter, squarer than deer tracks

Cloven-hoof tracks that are blunter and squarer than deer tracks. Worth checking before assuming deer are responsible for damage near a food plot or garden.

Fouled ponds and cloudier water

Damage to farm ponds and livestock watering holes, plus cloudier water. Wallowing near a water source raises turbidity. On a property with a well, a pond, or livestock water, this is the sign that moves the problem from cosmetic to serious.

The honest limit of exclusion

Start with the honest limit: exclusion becomes almost impossible against a persistent, hungry sounder. Fencing is a real tool for small, defined areas such as a yard or a garden. It is not a tool for open acreage. Knowing which of those two situations you are in determines whether fencing is worth the money.

Fencing a small area, tested

If you are fencing a small area, the specification matters and it has been tested. Use heavy-gauge wire fencing with openings no larger than 6 inches. A single electric strand about 6 inches off the ground gives baseline deterrence. A two-strand electric fence with wires at 8 and 18 inches has been shown in trials to cut incursions by roughly half. Solid 34-inch hog panels were the most effective option tested, holding up even under sustained pressure.

Remove the attractants

Remove attractants, because they undercut everything else you try. Traps and exclusion both work markedly less well when preferred natural food such as mast or standing crops is still available nearby. Pull in accessible pet food, secure garbage, and clear fallen fruit and mast where you reasonably can. About 85 percent of the diet is plant material, so food, not shelter, is what holds hogs on a property.

Trapping a sounder is real work

Trapping a whole sounder is coordinated work, not a weekend purchase. Corral-style cage traps, which are stationary and higher capacity, and smaller mobile cage traps are the standard methods, and both need daily monitoring and bait maintenance. Cable restraints are also used. Removing an established sounder, whether by corral trap or by coordinated shooting as a follow-up, is generally a professional or agency-program activity.

Texas, the most permissive

Texas is the clearest example of how permissive this can be. Texas exempts landowners and their agents from needing any hunting license at all to take feral hogs on their own property with landowner authorization, because feral hogs are classified as a non-game, depredating invasive species rather than as game. No closed season, no bag limit, year-round.

Missouri discourages hunting

Missouri is permissive on paper but actively discourages recreational hunting, and the reason is worth understanding. Missouri does not classify feral hogs as game animals, sets no season, and requires only a standard hunting license plus landowner permission on private land. But the Missouri Department of Conservation discourages recreational hunting and prohibits taking feral hogs on department-owned and department-managed conservation land, preferring coordinated trapping. Scattered shooting pressures a sounder into splitting up, which makes eliminating the group entirely much harder. Killing one hog can make the underlying problem worse.

The Carolinas differ

North Carolina and South Carolina sit in the same region with different rules. The North Carolina Wildlife Resources Commission asks the public to report feral swine sightings, damage, or kills directly to its Wildlife Helpline. South Carolina allows year-round trapping on private land with no license or permit required, but makes it illegal to remove a captured hog from the wild alive. Neighboring states, genuinely different obligations.

Hawaii runs a reporting line

Hawaii runs a statewide reporting line, and it is the clearest example of report-alongside-remove. The Hawaii Invasive Species Council operates a reporting hotline at 643-PEST (808-643-7378) and an online tool at 643pest.org for invasive species sightings including feral pigs. A national parallel exists too: USDA APHIS partners with the University of Georgia's Center for Invasive Species and Ecosystem Health on a public reporting tool at squealonpigs.com. Across these regions, reporting programs exist alongside removal rather than instead of it. None of these five regions prohibits removal in favor of report-only.

California makes you buy a tag

California is the one state that makes you buy something first, and it is worth being precise about what changed. Effective July 1, 2024, California reclassified wild pigs from a big-game species to an exotic game mammal, dropping the old individual-tag requirement in favor of an annual, unlimited-take wild pig validation. In practical hunting terms California is just as loose as the invasive-species states: year-round season, no daily bag limit, no possession limit. The difference is the paperwork. California is the only state where taking a wild pig requires purchasing a hunting license plus that wild pig validation. Texas goes furthest the other way and exempts anyone with landowner consent from holding a hunting license at all. Missouri sits between the two: no special hog permit, but a standard hunting license plus landowner permission. If you are in California, confirm you hold both before removing an animal, and confirm current requirements with the Department of Fish and Wildlife, since this rule changed recently.

Brucellosis and leptospirosis

The exposure route is field-dressing, not sighting. Swine brucellosis (Brucella suis) transmits to people through contact with blood, body fluids, or tissue while dressing a carcass, causing fever, sweats, headache, joint and muscle pain, and fatigue, and it can become chronic and recurring. Leptospirosis, if untreated in people, can cause kidney damage, meningitis, liver failure, and respiratory distress. Most human infections trace to field-dressing or cleaning a killed animal, or to eating undercooked meat, rather than to casual contact or a sighting. Wear PPE for any dressing or disposal, keep bare hands away from blood and fluids, and cook meat thoroughly.

Pseudorabies does not affect people

Pseudorabies does not affect humans, and that is worth stating outright. It is the disease of greatest concern to the US livestock industry from feral swine, which is why it comes up constantly, but USDA APHIS confirms it does not affect people and that meat from an infected animal is safe to eat. Bovine tuberculosis, trichinosis, and regionally African swine fever and foot-and-mouth disease also come up in feral swine literature. Published guidance treats those as livestock and surveillance concerns rather than confirmed widespread human risks, and they should be read that way.

Tusks are a real risk

Tusks are a secondary risk, but a real one. Feral swine have sharp, continuously growing tusks and may attack when cornered or defending young. It ranks behind disease and property damage, and it is still a reason not to crowd an animal or walk up on a sounder with piglets.

Call for a sounder, not one pig

Call a professional when it is a sounder, not a single animal. Multiple animals established on or repeatedly visiting a property is the threshold. Single-animal removal rarely resolves a sounder-level problem and can fragment the group, making full removal harder.

Call for damage near water

Call for any rooting or wallow damage near a well, pond, or other water source. That is where the water-contamination and turbidity findings turn a property-damage problem into a health one.

Call before field-dressing

Do it if you are not set up to handle a killed animal safely. The brucellosis and leptospirosis transmission pathway makes this a genuine safety threshold rather than a convenience question.

Report alongside removal

And in the regions with an active reporting program, report alongside removal. Hawaii's 643-PEST line, North Carolina's Wildlife Helpline, and the national squealonpigs.com tool all want the sighting logged. Reporting does not replace professional removal. It runs next to it, and it is how these states track a population that grows 20 percent a year.