- any of several medium-sized, bristly, piglike mammals of North and South America, comprising three genera of the family Tayassuidae (New World pigs ), all of which possess a scent gland on the rear of the back.
- either of two piglike artiodactyl mammals, Tayassu tajacu (collared peccary) or T. albirostris (white-lipped peccary) of forests of southern North America, Central and South America: family Tayassuidae
