The round-tailed muskrat is a semi-aquatic rodent of Florida's swamps and marshes. Its round tail cross-section helps distinguish it from the muskrat.
Its fur is brown, and its tail is rounded rather than flattened in cross-section. Tail shape helps distinguish it from the muskrat, which has a flattened tail.
It is semi-aquatic and lives in swamps and plant-rich marshes. It feeds on aquatic grasses.
IUCN Red List · Least Concern (LC) · Global
The IUCN lists it as Least Concern, while NatureServe assigned a global G2 rank (imperiled) in 2019. Wetland alteration and habitat fragmentation are also reported.