Owl's spiny rat, Carterodon sulcidens, is a rodent species from South America in the family Echimyidae. It is found in Brazil. It is the only species in the genus Carterodon. The Owl's spiny rat has evolved from a single species that has had morphologies within members of different geological areas. In turn, its characteristics have evolved from the factors of its environment, such as the heightened ability to dig in open grasslands during environmental change.