The species is an occupant of forested habitat. It has been reported from multistratal deciduous and evergreen rainforest, riverine gallery forest, xeric chaco, cerrado and dry scrub forest (Brooks, 1993; Emmons, 1990; Handley, 1976; Mondolfi, 1976; Schaller, 1983). It is found over a wide altitudinal range, with Andean individuals found at elevations up to 2,500 m (Lönnberg, 1921). Nasua nasua
is omnivorous, eating predominantly invertebrates and fruit (Gompper and Decker, 1998). The consumption of vertebrates has been noted, but is never common (Beisiegel, 2001; Bisbal, 1986; Gompper, 1996; Kaufmann, 1962; Russell, 1982; Schaller, 1983). It is essentially diurnal in its activities. Adult males are solitary, while females and immature males travel in groups up to 30 individuals (Crespo, 1982; Emmons, 1990; Schaller, 1983).