The Black-eared Deermouse is a small mouse found mainly in Mexico's highlands, with records in the higher elevations of southern Arizona. It emerges from burrows at night and feeds mostly on seeds and insects.
Its tawny to ochre-brown back contrasts with a black tuft behind each ear. The belly and feet are white, and the tail is dark above and pale below.
It uses burrows and emerges after dark. It is omnivorous, but seeds and insects make up most of its diet.
An extinction-risk assessment has not been added yet.