Sigmodon

Sigmodon is a genus of New World rats that belong to the family Cricetidae. The genus includes several species of rodents found in the Americas, primarily in the eastern and central regions of the United States, Mexico, and Central America.

The genus Sigmodon is divided into several species, including Sigmodon hispidus, commonly known as the hispid cotton mouse, and Sigmodon fulviventer, known as the fulvous four-toed cotton mouse. These rodents are small in size, typically measuring between 18 and 30 centimeters in length, including their tail, and weighing between 20 and 40 grams.

Sigmodon species are primarily herbivores, feeding on a variety of plants, including grasses, seeds, and fruits. They are also known to be omnivores, consuming insects and small invertebrates in addition to plant material.

Sigmodon rodents are found in a variety of habitats, including forests, grasslands, and wetlands. They are inclined to live in areas with dense vegetation, often burrowing into the ground to create shelters and hiding places. The species are generally active at night, with individuals venturing out into the open to forage for food under the cover of darkness.

Sigmodon species are considered to be important members of their ecosystems, playing a vital role in seed dispersal and nutrient cycling. However, their populations are often affected by various environmental factors, including deforestation, habitat fragmentation, and predation by larger animals. Despite these challenges, the genus Sigmodon continues to be relatively well-represented throughout its native range.