Nasua is a genus within the raccoon family, Procyonidae. The three species within the genus Nasua are generally referred to as coatis. A fourth species of coati, the Andean Coati (Nasuella olivacea) is placed in a separate genus Nasuella. Nasua differs from Nasuella in being larger and having larger canine teeth. Genetic studies have shown that the closest relatives of the coatis are the olingos.