Bartail spurdog vs Japanese Weasel

Squalus notocaudatus compared with Mustela itatsi

Key Differences

• Bartail spurdog is Least Concern while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Bartail spurdog	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Carnivora (Carnivorans)
Family	Squalidae	Mustelidae (Weasels & Otters)
Genus	Squalus	Mustela
Species	Squalus notocaudatus	Mustela itatsi

Evolutionary Relationship

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

Conservation Status

Bartail spurdog

LC — Least Concern

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Bartail spurdog	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bartail spurdog

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.

Bartail spurdog

The Bartail spurdog (Squalus notocaudatus) is a species in the genus Squalus. It is currently classified as Least Concern on the IUCN Red List.