This agouti is listed from Peru, Bolivia, Brazil and Argentina. An Argentine biodiversity profile describes reddish-brown fur flecked with black and records in forest, savanna and cultivated areas near water.
The coat is dark reddish brown overall, with banded hairs creating black speckles.
The Argentine species account records it in forest, savanna and cultivated areas near water, and describes it as generally diurnal and pair-living. These are Argentine records, not a claim about ecology throughout its range.
An extinction-risk assessment has not been added yet.