Andean Poison Frog vs Common Fat-tailed Mouse Opossum

Andinobates opisthomelas compared with Thylamys pusillus

Key Differences

• Andean Poison Frog is Vulnerable while Common Fat-tailed Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	Andean Poison Frog	Common Fat-tailed Mouse Opossum
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class	Amphibia (양서류)	Mammalia (포유류)
Order	Anura (개구리목)	Didelphimorphia (주머니쥐)
Family	Dendrobatidae (Poison Dart Frogs)	Didelphidae
Genus	Andinobates	Thylamys
Species	Andinobates opisthomelas	Thylamys pusillus

Evolutionary Relationship

Andean Poison Frog and Common Fat-tailed Mouse Opossum share a common ancestor at the Phylum level: Chordata. (척삭동물)

Conservation Status

Andean Poison Frog

VU — Vulnerable

Common Fat-tailed Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	Andean Poison Frog	Common Fat-tailed Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Andean Poison Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Colombia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Andean Poison Frog

The Andean Poison Frog (Andinobates opisthomelas) is a species in the genus Andinobates. It is currently classified as Vulnerable on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

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.