Common Fat-tailed Mouse Opossum vs 黃腹嶺裸鼻雀

Thylamys pusillus compared with Anisognathus lacrymosus

Taxonomic Classification

Rank	Common Fat-tailed Mouse Opossum	黃腹嶺裸鼻雀
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)	Passeriformes (雀形目)
Family	Didelphidae	Thraupidae
Genus	Thylamys	Anisognathus
Species	Thylamys pusillus	Anisognathus lacrymosus

Evolutionary Relationship

Common Fat-tailed Mouse Opossum and 黃腹嶺裸鼻雀 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Common Fat-tailed Mouse Opossum

LC — Least Concern

黃腹嶺裸鼻雀

LC — Least Concern

Physical Characteristics

Attribute	Common Fat-tailed Mouse Opossum	黃腹嶺裸鼻雀
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

黃腹嶺裸鼻雀

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and 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.

黃腹嶺裸鼻雀

泪斑山唐纳雀（Anisognathus lacrymosus）在IUCN红色名录中被评为无危（LC）。分布广泛，种群稳定，无直接保护关注。