The Hispid cotton rat (Sigmodon hispidus) is a medium-sized, primarily herbivorous rodent distributed in the southeastern United States and northern Mexico. It is characterized by stiff, coarse fur and is adapted to tall grasslands, agricultural fields, and shrubby areas. It feeds mainly on stems, leaves, and seeds, but also utilizes insects, eggs, and carrion. It is most active at dawn and dusk and is often solitary, living in nests or in burrows made by other animals. It has a high reproductive rate and can breed year-round; population levels fluctuate, and its current conservation status is of Least Concern (mild concern).