Discover the fascinating life of the Apeco Oldfield Mouse (Oryzomys apeco), a vulnerable rodent native to the grasslands and shrublands of eastern Brazil. Explore its unique characteristics, nocturnal behavior, and vital role in seed dispersal, as well as the pressing conservation efforts needed to protect this understudied species from habitat loss. Join us in understanding why the Apeco Oldfield Mouse is essential to its ecosystem and the challenges it faces today.