koala vs Zeledon’s Mouse Opossum

Phascolarctos cinereus compared with Marmosa zeledoni

Key Differences

• koala is Vulnerable while Zeledon’s Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	koala	Zeledon’s Mouse Opossum
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order	Diprotodontia (двурезцовые сумчатые)	Didelphimorphia (Опоссумы)
Family	Phascolarctidae (Koalas)	Didelphidae
Genus	Phascolarctos (Koalas)	Marmosa
Species	Phascolarctos cinereus	Marmosa zeledoni

Evolutionary Relationship

koala and Zeledon’s Mouse Opossum share a common ancestor at the Class level: Mammalia. (млекопитающие)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Zeledon’s Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	koala	Zeledon’s Mouse Opossum
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

Zeledon’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.