koala vs Yellowish Oryzomys

Phascolarctos cinereus compared with Aegialomys xanthaeolus

Key Differences

• koala is Vulnerable while Yellowish Oryzomys is Least Concern.

Taxonomic Classification

Rank	koala	Yellowish Oryzomys
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Diprotodontia (Marsupials)	Rodentia (อันดับสัตว์ฟันแทะ)
Family	Phascolarctidae (Koalas)	Cricetidae
Genus	Phascolarctos (Koalas)	Aegialomys
Species	Phascolarctos cinereus	Aegialomys xanthaeolus

Evolutionary Relationship

koala and Yellowish Oryzomys share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Yellowish Oryzomys

LC — Least Concern

Physical Characteristics

Attribute	koala	Yellowish Oryzomys
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.

Yellowish Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in 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.