Ecuadorian Cotton Rat vs Guianan White-eared Opossum

Sigmodon inopinatus compared with Didelphis imperfecta

Key Differences

• Ecuadorian Cotton Rat is Vulnerable while Guianan White-eared Opossum is Least Concern.

Taxonomic Classification

Rank	Ecuadorian Cotton Rat	Guianan White-eared Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Didelphimorphia (Didelphimorphia)
Family	Cricetidae	Didelphidae
Genus	Sigmodon	Didelphis
Species	Sigmodon inopinatus	Didelphis imperfecta

Evolutionary Relationship

Ecuadorian Cotton Rat and Guianan White-eared Opossum share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Ecuadorian Cotton Rat

VU — Vulnerable

Guianan White-eared Opossum

LC — Least Concern

Physical Characteristics

Attribute	Ecuadorian Cotton Rat	Guianan White-eared Opossum
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.

Guianan White-eared Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.