Hairy-tailed Tree Rat vs koala

Brachytarsomys villosa compared with Phascolarctos cinereus

Taxonomic Classification

Rank	Hairy-tailed Tree Rat	koala
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order	Rodentia (Rodents)	Diprotodontia (Marsupials)
Family	Nesomyidae	Phascolarctidae (Koalas)
Genus	Brachytarsomys	Phascolarctos (Koalas)
Species	Brachytarsomys villosa	Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

Hairy-tailed Tree Rat

VU — Vulnerable

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Hairy-tailed Tree Rat	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Hairy-tailed Tree Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

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.