Ecuadorian Cotton Rat vs Japanese Weasel

Sigmodon inopinatus compared with Mustela itatsi

Key Differences

• Ecuadorian Cotton Rat is Vulnerable while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Ecuadorian Cotton Rat	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Rodentia (Rodents)	Carnivora (carnívoros)
Family	Cricetidae	Mustelidae (Weasels & Otters)
Genus	Sigmodon	Mustela
Species	Sigmodon inopinatus	Mustela itatsi

Evolutionary Relationship

Ecuadorian Cotton Rat and Japanese Weasel share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

Ecuadorian Cotton Rat

VU — Vulnerable

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Ecuadorian Cotton Rat	Japanese Weasel
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.

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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