koala vs Rust fungus

Phascolarctos cinereus compared with Puccinia leveillei

Key Differences

• koala is Vulnerable while Rust fungus is Not Evaluated.

Taxonomic Classification

Rank	koala	Rust fungus
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Pucciniomycetes (Pucciniomycetes)
Order	Diprotodontia (Marsupials)	Pucciniales (Pucciniales)
Family	Phascolarctidae (Koalas)	Pucciniaceae
Genus	Phascolarctos (Koalas)	Puccinia
Species	Phascolarctos cinereus	Puccinia leveillei

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Rust fungus

NE — Not Evaluated

Physical Characteristics

Attribute	koala	Rust fungus
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.

Rust fungus

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Sweden, and United States.

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.