Big-eared opossum vs Ruff

Didelphis aurita compared with Calidris pugnax

Taxonomic Classification

Rank	Big-eared opossum	Ruff
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Didelphimorphia (Didelphimorphia)	Charadriiformes (チドリ目)
Family	Didelphidae	Scolopacidae
Genus	Didelphis	Calidris
Species	Didelphis aurita	Calidris pugnax

Evolutionary Relationship

Big-eared opossum and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Big-eared opossum

LC — Least Concern

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Big-eared opossum	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big-eared opossum

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).

Big-eared opossum

The Big-eared opossum (Didelphis aurita) is a species in the genus Didelphis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Ruff（Calidris pugnax）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。