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 (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	Rodentia (啮齿目)	Carnivora (食肉目)
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. (哺乳動物)

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.