Large Japanese Field Mouse vs Ruff

Apodemus speciosus compared with Calidris pugnax

Taxonomic Classification

Rank	Large Japanese Field Mouse	Ruff
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Charadriiformes (Charadriiformes)
Family	Muridae (Mice & Rats)	Scolopacidae
Genus	Apodemus	Calidris
Species	Apodemus speciosus	Calidris pugnax

Evolutionary Relationship

Large Japanese Field Mouse and Ruff share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Large Japanese Field Mouse

LC — Least Concern

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Large Japanese Field Mouse	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Large Japanese Field Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

Ruff (Calidris pugnax) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.