Common Fat-tailed Mouse Opossum vs 斑腹矶鹬

Thylamys pusillus compared with Actitis macularius

Taxonomic Classification

Rank	Common Fat-tailed Mouse Opossum	斑腹矶鹬
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	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Didelphimorphia (负鼠目)	Charadriiformes (鸻形目)
Family	Didelphidae	Scolopacidae
Genus	Thylamys	Actitis
Species	Thylamys pusillus	Actitis macularius

Evolutionary Relationship

Common Fat-tailed Mouse Opossum and 斑腹矶鹬 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Common Fat-tailed Mouse Opossum

LC — Least Concern

斑腹矶鹬

LC — Least Concern

Physical Characteristics

Attribute	Common Fat-tailed Mouse Opossum	斑腹矶鹬
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

斑腹矶鹬

Habitat

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

Range

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

Common Fat-tailed Mouse Opossum

The Common Fat-tailed Mouse Opossum (<em>Thylamys pusillus</em>) is a small marsupial belonging to the genus Thylamys within the family Didelphidae. Like other members of its genus, this species typically stores fat in its tail, which becomes swollen during periods of food abundance and is metabolised during leaner times, a physiological adaptation that provides energy reserves. <em>Thylamys pusillus</em> is generally found in diverse terrestrial and aquatic ecosystems, often in dry woodlands, scrublands, and grassland habitats of South America. The species is assessed as Least Concern on the IUCN Red List, indicating it is not currently considered at risk of extinction. Detailed geographic range data are not available in the current record, but members of this genus are typically distributed across parts of Argentina, Bolivia, Paraguay, and Uruguay. Biological traits including average lifespan, body dimensions, and specific dietary composition remain poorly documented in the scientific literature, though Thylamys species are generally considered omnivorous, often consuming insects, small vertebrates, and plant material.

斑腹矶鹬

斑矶鹬（Actitis macularius）在IUCN红色名录中被列为无危（LC）。在其分布范围内广泛分布且数量丰富，种群稳定，无即时保护忧虑。