This large-eared mouse lives among rocky and brushy parts of the Andes. It is active at night and eats seeds and arthropods.
Its gray coat has small mustard-colored spots. The underside is white, and the well-developed tail ends in a conspicuous tuft of hair.
The account describes it as nocturnal and omnivorous, feeding on seeds and arthropods. It records the species in rocky Andean settings with shrubs near water.
An extinction-risk assessment has not been added yet.