Japanese Weasel vs Merriam’s Pocket Mouse

Mustela itatsi compared with Perognathus merriami

Key Differences

• Japanese Weasel is Near Threatened while Merriam’s Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	Japanese Weasel	Merriam’s Pocket Mouse
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	Carnivora (食肉目)	Rodentia (啮齿目)
Family	Mustelidae (Weasels & Otters)	Heteromyidae
Genus	Mustela	Perognathus
Species	Mustela itatsi	Perognathus merriami

Evolutionary Relationship

Japanese Weasel and Merriam’s Pocket Mouse share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Japanese Weasel

NT — Near Threatened

Merriam’s Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Merriam’s Pocket Mouse
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.

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.