Alston s Cotton Rat vs Dwarf round ray

Sigmodon alstoni compared with Urotrygon nana

Key Differences

• Alston s Cotton Rat is Least Concern while Dwarf round ray is Near Threatened.

Taxonomic Classification

Rank	Alston s Cotton Rat	Dwarf round ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Myliobatiformes (Myliobatiformes)
Family	Cricetidae	Urotrygonidae
Genus	Sigmodon	Urotrygon
Species	Sigmodon alstoni	Urotrygon nana

Evolutionary Relationship

Alston s Cotton Rat and Dwarf round ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Alston s Cotton Rat

LC — Least Concern

Dwarf round ray

NT — Near Threatened

Physical Characteristics

Attribute	Alston s Cotton Rat	Dwarf round ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alston s Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Dwarf round ray

Alston s Cotton Rat

The Alston s Cotton Rat (Sigmodon alstoni) is a species in the genus Sigmodon. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems. Distributed across Colombia and Venezuela.