koala vs white-fronted surili

Phascolarctos cinereus compared with Presbytis frontata

Taxonomic Classification

Rank	koala	white-fronted surili
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Diprotodontia (Marsupials)	Primates (Primates)
Family	Phascolarctidae (Koalas)	Cercopithecidae (Old World Monkeys)
Genus	Phascolarctos (Koalas)	Presbytis
Species	Phascolarctos cinereus	Presbytis frontata

Evolutionary Relationship

koala and white-fronted surili share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

white-fronted surili

VU — Vulnerable

Physical Characteristics

Attribute	koala	white-fronted surili
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-fronted surili

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.