Alston s Cotton Rat vs Andean White-eared Opossum

Sigmodon alstoni compared with Didelphis pernigra

Taxonomic Classification

Rank	Alston s Cotton Rat	Andean 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 alstoni	Didelphis pernigra

Evolutionary Relationship

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

Conservation Status

Alston s Cotton Rat

LC — Least Concern

Andean White-eared Opossum

LC — Least Concern

Physical Characteristics

Attribute	Alston s Cotton Rat	Andean White-eared Opossum
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.

Andean White-eared Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

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.

Andean White-eared Opossum

The Andean White-eared Opossum (Didelphis pernigra) is a species in the genus Didelphis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela