Ecuadorian Cotton Rat vs Pacific Spiny-rat

Sigmodon inopinatus compared with Proechimys decumanus

Key Differences

• Ecuadorian Cotton Rat is Vulnerable while Pacific Spiny-rat is Near Threatened.

Taxonomic Classification

Rank	Ecuadorian Cotton Rat	Pacific Spiny-rat
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order same	Rodentia (啮齿目)	Rodentia (啮齿目)
Family	Cricetidae	Echimyidae
Genus	Sigmodon	Proechimys
Species	Sigmodon inopinatus	Proechimys decumanus

Evolutionary Relationship

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

Conservation Status

Ecuadorian Cotton Rat

VU — Vulnerable

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

Attribute	Ecuadorian Cotton Rat	Pacific 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.

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Shared Countries

Both species can be found in 1 countries:

🇪🇨 Ecuador