koala vs White-tailed Tree Rat

Phascolarctos cinereus compared with Brachytarsomys albicauda

Key Differences

• koala is Vulnerable while White-tailed Tree Rat is Least Concern.

Taxonomic Classification

Rank	koala	White-tailed Tree Rat
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)	Nesomyidae
Genus	Phascolarctos (Koalas)	Brachytarsomys
Species	Phascolarctos cinereus	Brachytarsomys albicauda

Evolutionary Relationship

koala and White-tailed Tree Rat share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

White-tailed Tree Rat

LC — Least Concern

Physical Characteristics

Attribute	koala	White-tailed Tree Rat
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.

White-tailed Tree Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.