People often confuse peccaries, which are found in the Americas, with the pig family which originated in Afro-Eurasia, especially since some domestic pigs brought by European settlers have escaped over the years and now run wild as razorback hogs in many parts of the United States.
Peccaries are omnivores, and will eat small animals, although their preferred food consists of roots, grass, seeds, fruit, Pigs and peccaries can be differentiated by the shape of the canine tooth, or tusk. In European pigs the tusk is long and curves around on itself, whereas in peccaries, the tusk is short and straight. The jaws and tusks of peccaries are adapted for crushing hard seeds and slicing into plant roots,
Peccaries are social animals, and often form herds. Over 100 individuals have been recorded for a single herd of white-lipped peccaries, but collared and Chacoan peccaries usually form smaller groups. Such social behavior seems to have been the situation in extinct peccaries as well. The recently discovered Giant Peccary (Pecari maximus) appears to be less social, primarily living in pairs.
Peccaries have scent glands below each eye and another on their back, though these are believed to be rudimentary in P. maximus. They use the scent to mark herd territories, which range from 75 to . They also mark other herd members with these scent glands by rubbing one against another. The pungent odor allows peccaries to recognize other members of the herd, despite their myopic vision. The odor is strong enough to be picked up by humans, which earns the peccary the nickname of skunk pig.
The Collared Peccary (Pecari tajacu) or "musk hog," referring to the animal's scent glands, occurs from the southwestern United States into South America and the island of Trinidad. They are found in all kinds of habitats, from arid scrublands to humid tropical rainforests. The Collared Peccary is well adapted to habitat disturbed by humans, merely requiring sufficient cover; they can be found in cities and agricultural land throughout their range. Notable populations exist in the suburbs of Phoenix and Tucson, Arizona, where they will feed on ornamental plants and other cultivated vegetation. Collared Peccaries are generally found in bands of eight to 15 animals of various ages. They will defend themselves if they feel threatened but otherwise tend to ignore human beings. They defend themselves with their long tusks, which sharpen themselves whenever the mouth opens or closes.
A second species is the White-lipped peccary (Tayassu pecari), which is found in the rainforests of Central and South America.
The third species, the Chacoan peccary (Catagonus wagneri), is the closest living relative to the extinct Platygonus pearcei. It is found in the dry shrub habitat or Chaco of Paraguay, Bolivia and Argentina. The Chacoan peccary has the unusual distinction of having been first described based on fossils and was originally thought to be only an extinct species. In 1975 the animal was discovered to still be alive and well in the Chaco region of Paraguay. The species was well known to the native people.
A fourth species, the Giant Peccary (Pecari maximus) was recently described from the Brazilian Amazon by Dutch biologist Marc van Roosmalen. Though recently discovered by science it has been known to the local Tupi people as Caitetu Munde, which means "great peccary which lives in pairs." It is thought to be the largest extant peccary, and can grow to in length. Its fur is completely dark gray, with no collars whatsoever. Unlike other peccaries it lives in pairs, or with one or two offspring. However, the scientific evidence for considering it as a species separate from the Collared Peccary has later been questioned.
Although they are common in South America today, peccaries did not reach that continent until about three million years ago during the Great American Interchange, when the Isthmus of Panama formed, connecting North America and South America. At that time, many North American animals—including peccaries, llamas and tapirs—entered South America, while some South American species, such as the ground sloths, migrated north.
Category:Even-toed ungulates Category:Mammals of South America
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