Ctenomys, commonly known as the tuco-tuco, is a genus of burrowing rodents found primarily in South America. These small mammals are characterized by their robust bodies, short limbs, and large front teeth, which they use for digging. They inhabit a variety of environments, including grasslands and scrublands, where they create extensive tunnel systems. There are over 20 recognized species of Ctenomys, each adapted to specific habitats. These rodents are primarily herbivorous, feeding on roots, tubers, and grasses. Their burrowing behavior plays a crucial role in soil aeration and seed dispersal, contributing to the health of their ecosystems.