A grown wild boar usually lands somewhere between a large dog and a small adult person in weight, and it’s built low and heavy rather than tall. Most adults weigh roughly 50 to 150 kg (110 to 330 lb), stand under a meter at the shoulder and run about 1.4 to 1.6 m long, with males heavier than females. There’s no single size for the species, though. Boars in different regions, with different food supplies, can differ by a factor of two, and exceptional individuals or hybrids can pass 270 kg. The famous 800-pound hogs are rare outliers. Much of a boar’s real power comes less from sheer size than from its ever-growing tusks and a tough armored layer that males build over their shoulders.
Typical Size and Weight of an Adult Wild Boar
Two well-measured European populations bracket the normal range. In northern Spain, adult males average about 74 kg (164 lb) and adult females about 55 kg (122 lb).1Galemys: Boletín informativo de la Sociedad Española para la conservación y estudio de los mamíferos. Physical development of wild boar in the Cantabric Mountains, Álava, Nothern Spain Those boars measure about 154 cm (5 ft) from snout to rump for males and 142 cm for females.2Galemys: Boletín informativo de la Sociedad Española para la conservación y estudio de los mamíferos. Physical development of wild boar in the Cantabric Mountains, Álava, Nothern Spain In Transylvania, Romania, boars over 3 years old average about 142 kg (313 lb) for males and 115 kg (254 lb) for females.3Porcine Research. Biometric data in wild boar ( Sus scrofa ferus) populations from Transylvania over 3 years of age
Height is modest even in big boars. Those heavy Romanian males stand about 95 cm (3 ft 1 in) at the shoulder, and females about 88 cm.4Porcine Research. Biometric data in wild boar ( Sus scrofa ferus) populations from Transylvania over 3 years of age A typical boar’s overall length runs up to about 1.8 m (6 ft) including the head.5Animal Matchup. Wild Boar vs Warthog See Who Wins Most of a boar’s mass is in the chest and shoulders, so weight is hard to guess from height alone, and judging by eye usually underestimates it.
Online weight figures disagree so much because they measure different things. Some are averages, others are the record for the biggest animal ever found, and the two can differ enormously. Some are live weights while others are field-dressed, and gutting and bleeding remove a sizable share of the total. Some cover adults only, while an all-ages figure is pulled well below the adult range by piglets and yearlings. Region and the year’s food supply shift averages too, so a number from one country won’t necessarily fit the boars near you.
How Much Bigger Males Are Than Females
In a large population of introduced wild pigs in South Carolina, males averaged heavier than females in every age group.6Savannah River National Laboratory. Body Mass Variation in an Introduced Wild Pig Population with Changing Ancestry Still, sizes overlapped in every group, so many females are bigger than many males.7Savannah River National Laboratory. Body Mass Variation in an Introduced Wild Pig Population with Changing Ancestry The difference didn’t show in piglets and appeared as the animals grew.8Savannah River National Laboratory. Body Mass Variation in an Introduced Wild Pig Population with Changing Ancestry Among adults the gap is clearer, about 20 to 35 percent in the European populations above.9Galemys: Boletín informativo de la Sociedad Española para la conservación y estudio de los mamíferos. Physical development of wild boar in the Cantabric Mountains, Álava, Nothern Spain10Porcine Research. Biometric data in wild boar ( Sus scrofa ferus) populations from Transylvania over 3 years of age Males stood about 7 cm taller at the shoulder in Romania.11Porcine Research. Biometric data in wild boar ( Sus scrofa ferus) populations from Transylvania over 3 years of age The heaviest animal recorded in the South Carolina population was an adult male of 189 kg, against 170 kg for the heaviest female.12Savannah River National Laboratory. Body Mass Variation in an Introduced Wild Pig Population with Changing Ancestry Males grow bigger because they fight each other for mates, which rewards weight and strength, while females put their energy into litters.
Size alone won’t tell a boar from a sow. Mature males tend to show longer tusks that stick out visibly from the mouth, while a sow’s are usually shorter and less obvious. A large animal traveling with striped piglets is almost certainly a sow, since adult males mostly live apart from the family groups.
The Biggest Boars and the Truth About Giant Hogs
The largest wild boars of northern Eurasia can weigh around 275 kg (606 lb).13Guinness World Records. Largest wild pig ever That puts them in a near tie with Africa’s giant forest hog as the biggest wild pig alive.14Guinness World Records. Largest wild pig ever In the Carpathian Mountains, well-fed boars occasionally reach about 200 kg (441 lb).15A-Z Animals. Discover the Largest Wild Boar Ever The Russian far east and northeast China hold the largest boars, with big males often over 225 kg (500 lb).16A-Z Animals. Discover the Largest Wild Boar Ever
Giant-hog headlines tell a different story. Hogzilla, a famous Georgia hog, was confirmed by scientists at about 360 kg (800 lb), well below the original claims.17Wikipedia. Hogzilla Russian boars brought to the Great Smoky Mountains were said to reach over 270 kg (600 lb) and about 1.8 m long.18Pieces of History. Russian Wild Boars at Great Smoky Mountains National Park Such giants are typically feral or part-domestic pigs, whose ancestors were bred to grow heavy.
Feral hogs are escaped domestic pigs or their descendants, and hybrids mix boar and domestic genes and can grow larger. In North America many wild pigs are such mixes, so sizes vary widely.
To judge a viral photo, start with the camera. Holding the animal close to the lens, or shooting from a low angle, can make it look far larger than it is. Many claimed weights are guesses that never touched a scale, and guesses by eye tend to run high for big animals. The useful question is whether the weight came from a certified scale, and whether the animal was weighed whole or after gutting.
Why Boars in Some Places Grow Bigger
Besides age and sex, a boar’s weight depends on the yearly crop of acorns, beechnuts and other tree nuts.19Journal of Zoology. Diet and condition of wild boar, <i>Sus scrofu scrofu</i>, without supplementary feeding In poor nut years young boars lose more weight and fat than adults.20Journal of Zoology. Diet and condition of wild boar, <i>Sus scrofu scrofu</i>, without supplementary feeding On the Italian coast, a winter with little high-energy food was followed by weight loss and a population crash.21Acta Theriologica. Diet, food availability and reproduction of wild boar in a Mediterranean coastal area In parts of Japan, though, boars kept their condition in poor acorn years by eating other foods such as bamboo shoots.22Mammal Study. Contribution of Acorn Masting to Food Composition and Body Condition of and Crop Damage by Wild Boars (Sus scrofa) Inhabiting Evergreen Forests in Japan
In a heavy nut year boars can fatten before winter. Well-fed females are more likely to breed and may have larger litters, so numbers rise after good food years.
Farmland also makes heavier boars. In Germany, female boars living near farm fields weighed more than those in pure forest.23PubMed Central. Heavy Youngsters—Habitat and Climate Factors Lead to a Significant Increase in Body Weight of Wild Boar Females The gap was biggest in yearlings, about 8 kg heavier near fields.24PubMed Central. Heavy Youngsters—Habitat and Climate Factors Lead to a Significant Increase in Body Weight of Wild Boar Females
Region and islands matter as well. Across Eurasia, boar size changes gradually from south to north and west to east, and island boars form distinct smaller types.25OpenAlex / Environmental Archaeology. Size and shape of the Eurasian wild boar (Sus scrofa), with a view to the reconstruction of its Holocene history An extinct boar on Cyprus became about 13 percent smaller than mainland relatives after being cut off on the island.26Klimonas. The extinct small Cypriot wild boar (Sus scrofa circeus): osteological description, origins, and insular evolution
Boars don’t consistently grow larger in colder places, since some ancient boars in Spain and Italy were larger in warm periods. Food supply often matters more than temperature.
Tusks and the Shoulder Shield
Boars have four tusks that grow throughout life and can be extremely sharp.27Wisconsin Department of Natural Resources. Feral pig hunting The lower tusk runs deep into the jaw, back to the molars.28Grand View Outdoors. Boar Tusks Explained: What Wild Boar Tusks Are Used For Because the upper and lower tusks rub together, they hone each other’s edges.
Males slash sideways and upward at rivals, aiming mostly at the neck and shoulders. The lower tusks are the longer, more exposed pair, and longer ones tend to belong to older males, though length is only a rough clue to age. Sows have tusks too, but they are usually smaller and harder to see.
Older males develop a shoulder shield, a dense white layer under the skin over the shoulders.29PubMed. Characterisation and development of ‘the shield’ in male pigs It is mostly tough collagen, like the inner layer of skin, with little fat.30PubMed. Characterisation and development of ‘the shield’ in male pigs Most fighting wounds on males land on the neck and shoulders, about three quarters within the shield’s area.31Savannah River National Laboratory. Characterization and Development of the Male Shoulder Shield in an Introduced Wild Pig Population Wounds that pierce it generally stop in the outer muscle rather than reaching the lungs or liver.32Savannah River National Laboratory. Characterization and Development of the Male Shoulder Shield in an Introduced Wild Pig Population Males without a shield showed no comparable scars.33Savannah River National Laboratory. Characterization and Development of the Male Shoulder Shield in an Introduced Wild Pig Population
Hunters tend to notice the shield while butchering. It feels like thick, rubbery cartilage under the skin, and a knife cuts through it far more slowly than through normal skin. It is thickest in old males and absent in piglets, building up as a male matures.
How Fast Boars Grow and When They Reach Full Size
Newborn piglets weigh only about 0.4 to 0.8 kg (1 to 2 lb).34Animal Diversity Web. Sus scrofa wild boar They nurse until weaning at 8 to 12 weeks.35Animal Diversity Web. Sus scrofa wild boar Females can breed around 10 months and males at 5 to 7 months, long before full size.36Animal Diversity Web. Sus scrofa wild boar Weight keeps rising until about 3.5 years of age,37SRNL.DOE.GOV. Body Mass Variation in an Introduced Wild Pig Population with Changing Ancestry and some growth continues to age 5 or 6.38Animal Diversity Web. Sus scrofa wild boar Sows average 5 to 6 piglets per litter and can have up to two litters a year,39Animal Diversity Web. Sus scrofa wild boar so numbers climb quickly in good food years.
Size gives a rough guide to age. Striped coats mark young piglets in their first months, before they fade to the adult color. Yearlings can look adult-sized yet are still much lighter than mature animals. A truly heavy animal is more likely to be mature, though size varies so much with region and food that it’s only a rough clue.
Is a Boar’s Size Dangerous to People
In Sweden, about one person is injured per 100 crashes with wild boar.40MDPI Safety. Consequences of Increases in Wild Boar-Vehicle Accidents 2003–2016 in Sweden on Personal Injuries and Costs Most of those injuries are minor.41MDPI Safety. Consequences of Increases in Wild Boar-Vehicle Accidents 2003–2016 in Sweden on Personal Injuries and Costs The more common harm is to the car, since a 100 kg animal low to the ground can cause serious damage at speed.
Slow down at dusk and dawn near woods and fields where boars cross roads. Away from the road, never approach a sow with piglets, since she will defend them. Give a wounded or cornered boar plenty of space because of its tusks.