koala vs Miller Lake Lamprey

Phascolarctos cinereus compared with Entosphenus minimus

Taxonomic Classification

Rank	koala	Miller Lake Lamprey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Petromyzonti (Petromyzonti)
Order	Diprotodontia (Marsupials)	Petromyzontiformes (lamprey)
Family	Phascolarctidae (Koalas)	Petromyzontidae
Genus	Phascolarctos (Koalas)	Entosphenus
Species	Phascolarctos cinereus	Entosphenus minimus

Evolutionary Relationship

koala and Miller Lake Lamprey share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Miller Lake Lamprey

VU — Vulnerable

Physical Characteristics

Attribute	koala	Miller Lake Lamprey
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.

Miller Lake Lamprey

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.