Ecuadorian Cotton Rat vs Guinean Arvicanthis

Sigmodon inopinatus compared with Arvicanthis rufinus

Key Differences

• Ecuadorian Cotton Rat is Vulnerable while Guinean Arvicanthis is Least Concern.

Taxonomic Classification

Rank	Ecuadorian Cotton Rat	Guinean Arvicanthis
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	Cricetidae	Muridae (Mice & Rats)
Genus	Sigmodon	Arvicanthis
Species	Sigmodon inopinatus	Arvicanthis rufinus

Evolutionary Relationship

Ecuadorian Cotton Rat and Guinean Arvicanthis share a common ancestor at the Order level: Rodentia. (Rodents)

Conservation Status

Ecuadorian Cotton Rat

VU — Vulnerable

Guinean Arvicanthis

LC — Least Concern

Physical Characteristics

Attribute	Ecuadorian Cotton Rat	Guinean Arvicanthis
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Guinean Arvicanthis

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.