Japanese Weasel vs

Mustela itatsi compared with Trichormus variabilis

Key Differences

• Japanese Weasel is Near Threatened while is Not Evaluated.

Taxonomic Classification

Rank	Japanese Weasel
Kingdom	Animalia (Animals)	Bacteria (Bacteria)
Phylum	Chordata (Chordates)	Cyanobacteria (Cyanobacteria)
Class	Mammalia (Mammals)	Cyanobacteriia
Order	Carnivora (Carnivorans)	Cyanobacteriales
Family	Mustelidae (Weasels & Otters)	Nostocaceae
Genus	Mustela	Trichormus
Species	Mustela itatsi	Trichormus variabilis

Conservation Status

Japanese Weasel

NT — Near Threatened

NE — Not Evaluated

Physical Characteristics

Attribute	Japanese Weasel
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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Trichormus variabilis is a filamentous, nitrogen-fixing cyanobacterium in the family Nostocaceae. It forms heterocysts — specialized nitrogen-fixing cells — within its trichomes and is found in freshwater, soil, and symbiotic associations. Its conservation status is not evaluated.