Amur Brown Lemming vs Ruff

Lemmus amurensis compared with Calidris pugnax

Taxonomic Classification

Rank	Amur Brown Lemming	Ruff
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Charadriiformes (Charadriiformes)
Family	Cricetidae	Scolopacidae
Genus	Lemmus	Calidris
Species	Lemmus amurensis	Calidris pugnax

Evolutionary Relationship

Amur Brown Lemming and Ruff share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Amur Brown Lemming

LC — Least Concern

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Amur Brown Lemming	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amur Brown Lemming

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).

Amur Brown Lemming

The Amur Brown Lemming (Lemmus amurensis) is a species in the genus Lemmus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.