koala vs Perijá’s Stream Frog

Phascolarctos cinereus compared with Hyloscirtus japreria

Key Differences

• koala is Vulnerable while Perijá’s Stream Frog is Endangered.

Taxonomic Classification

Rank	koala	Perijá’s Stream Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Diprotodontia (Marsupials)	Anura (Frogs & Toads)
Family	Phascolarctidae (Koalas)	Hylidae
Genus	Phascolarctos (Koalas)	Hyloscirtus
Species	Phascolarctos cinereus	Hyloscirtus japreria

Evolutionary Relationship

koala and Perijá’s Stream Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Perijá’s Stream Frog

EN — Endangered

Physical Characteristics

Attribute	koala	Perijá’s Stream Frog
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.

Perijá’s Stream Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

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.