Genus Neofiber, also known as the round-tailed muskrat, is a rodent species that inhabits wetlands in North America. In scientific literature, synonyms are alternate names used to refer to the same organism or species. For the Genus Neofiber, some of its synonyms include Fiber, Geomys, and Ondatra. Fiber is derived from the animal's long, soft, and silky fur, making it a particularly desirable resource for human use. Geomys is a name that refers to the animal's burrowing and tunneling behavior. Ondatra is another taxonomic synonym for the round-tailed muskrat species, derived from its similarity to the closely related Ondatra zibethicus, also known as the muskrat.