Aratathomas's Yellow-shouldered Bat vs Common Fat-tailed Mouse Opossum

Sturnira aratathomasi compared with Thylamys pusillus

Key Differences

• Aratathomas's Yellow-shouldered Bat is Near Threatened while Common Fat-tailed Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	Aratathomas's Yellow-shouldered Bat	Common Fat-tailed Mouse Opossum
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class same	Mammalia (ثدييات)	Mammalia (ثدييات)
Order	Chiroptera (خفاشيات)	Didelphimorphia (Didelphimorphia)
Family	Phyllostomidae	Didelphidae
Genus	Sturnira	Thylamys
Species	Sturnira aratathomasi	Thylamys pusillus

Evolutionary Relationship

Aratathomas's Yellow-shouldered Bat and Common Fat-tailed Mouse Opossum share a common ancestor at the Class level: Mammalia. (ثدييات)

Conservation Status

Aratathomas's Yellow-shouldered Bat

NT — Near Threatened

Common Fat-tailed Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	Aratathomas's Yellow-shouldered Bat	Common Fat-tailed Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aratathomas's Yellow-shouldered Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Aratathomas's Yellow-shouldered Bat

The Aratathomas's Yellow-shouldered Bat (Sturnira aratathomasi) is a species in the genus Sturnira. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.