Japanese Weasel vs Smooth hound

Mustela itatsi compared with Mustelus mento

Key Differences

• Japanese Weasel is Near Threatened while Smooth hound is Critically Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Smooth hound
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Carnivora (Carnivorans)	Carcharhiniformes (Ground Sharks)
Family	Mustelidae (Weasels & Otters)	Triakidae
Genus	Mustela	Mustelus
Species	Mustela itatsi	Mustelus mento

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Smooth hound

CR — Critically Endangered

Physical Characteristics

Attribute	Japanese Weasel	Smooth hound
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.

Smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

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