Nelson s Antelope Squirrel vs Ruff

Ammospermophilus nelsoni compared with Calidris pugnax

Key Differences

• Nelson s Antelope Squirrel is Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Nelson s Antelope Squirrel	Ruff
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Aves (นก)
Order	Rodentia (อันดับสัตว์ฟันแทะ)	Charadriiformes (Charadriiformes)
Family	Sciuridae (Squirrels)	Scolopacidae
Genus	Ammospermophilus	Calidris
Species	Ammospermophilus nelsoni	Calidris pugnax

Evolutionary Relationship

Nelson s Antelope Squirrel and Ruff share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Nelson s Antelope Squirrel

EN — Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Nelson s Antelope Squirrel	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Nelson s Antelope Squirrel

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.