Amazonian Marsh Rat vs Ecuadorian Cotton Rat

Holochilus sciureus compared with Sigmodon inopinatus

Key Differences

• Amazonian Marsh Rat is Least Concern while Ecuadorian Cotton Rat is Vulnerable.

Taxonomic Classification

Rank	Amazonian Marsh Rat	Ecuadorian Cotton Rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family same	Cricetidae	Cricetidae
Genus	Holochilus	Sigmodon
Species	Holochilus sciureus	Sigmodon inopinatus

Evolutionary Relationship

Amazonian Marsh Rat and Ecuadorian Cotton Rat share a common ancestor at the Family level: Cricetidae.

Conservation Status

Amazonian Marsh Rat

LC — Least Concern

Ecuadorian Cotton Rat

VU — Vulnerable

Physical Characteristics

Attribute	Amazonian Marsh Rat	Ecuadorian Cotton Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazonian Marsh Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Ecuadorian Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Amazonian Marsh Rat

The Amazonian Marsh Rat (Holochilus sciureus) is a species in the genus Holochilus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.