Japanese Weasel vs Spotted Thorius

Mustela itatsi compared with Thorius spilogaster

Key Differences

• Japanese Weasel is Near Threatened while Spotted Thorius is Critically Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Spotted Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Carnivora (Carnivorans)	Caudata (Caudata)
Family	Mustelidae (Weasels & Otters)	Plethodontidae
Genus	Mustela	Thorius
Species	Mustela itatsi	Thorius spilogaster

Evolutionary Relationship

Japanese Weasel and Spotted Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Japanese Weasel

NT — Near Threatened

Spotted Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Japanese Weasel	Spotted Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

Spotted Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.