It is often found in dry arid habitats. It is found in the dry shrub habitat or Chaco of Paraguay, Bolivia and Southern Brazil. The Chacoan peccary has the unusual distinction of having been first been 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. This third species of peccary was well known by the native indians but it took awhile for scientists to discover its existence.
Peccaries have a long history in North America.
They first appear in the Early Oligocene, about 32 million years ago and a variety of different species are present in faunas of different ages across the continent. Some of these extinct peccaries have been found at John Day Fossil Beds National Monument in Oregon and at Badlands National Monument in South Dakota. Although common in South America today, peccaries did not reach that continent until about 9 million years ago. Prior to that, there was no isthmus of Panama, and South America was an island continent. As the Panamanian isthmus formed, many North American animals entered South America.