Ecuadorian Cotton Rat vs Napo Spiny-rat

Sigmodon inopinatus compared with Proechimys quadruplicatus

Key Differences

• Ecuadorian Cotton Rat is Vulnerable while Napo Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Ecuadorian Cotton Rat	Napo Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Rodentia (Roedores)	Rodentia (Roedores)
Family	Cricetidae	Echimyidae
Genus	Sigmodon	Proechimys
Species	Sigmodon inopinatus	Proechimys quadruplicatus

Evolutionary Relationship

Ecuadorian Cotton Rat and Napo Spiny-rat share a common ancestor at the Order level: Rodentia. (Roedores)

Conservation Status

Ecuadorian Cotton Rat

VU — Vulnerable

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Ecuadorian Cotton Rat	Napo Spiny-rat
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.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Shared Countries

Both species can be found in 1 countries:

🇪🇨 Ecuador