Brook Thistle vs koala

Cirsium rivulare compared with Phascolarctos cinereus

Key Differences

• Brook Thistle is Extinct while koala is Vulnerable.

Taxonomic Classification

Rank	Brook Thistle	koala
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Magnoliophyta (магнолиофиты)	Chordata (хордовые)
Class	Magnoliopsida (Dicots)	Mammalia (млекопитающие)
Order	Asterales (астроцветные)	Diprotodontia (двурезцовые сумчатые)
Family	Asteraceae (Daisy Family)	Phascolarctidae (Koalas)
Genus	Cirsium	Phascolarctos (Koalas)
Species	Cirsium rivulare	Phascolarctos cinereus

Conservation Status

Brook Thistle

EX — Extinct

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Brook Thistle	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Brook Thistle

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (7 countries).

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.

Brook Thistle

The Brook Thistle (Cirsium rivulare) is a species in the genus Cirsium. It is currently classified as Extinct on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.