Delicate Pygmy Rice Rat vs koala

Oligoryzomys delicatus compared with Phascolarctos cinereus

Key Differences

• Delicate Pygmy Rice Rat is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Delicate Pygmy Rice Rat	koala
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order	Rodentia (грызуны)	Diprotodontia (двурезцовые сумчатые)
Family	Cricetidae	Phascolarctidae (Koalas)
Genus	Oligoryzomys	Phascolarctos (Koalas)
Species	Oligoryzomys delicatus	Phascolarctos cinereus

Evolutionary Relationship

Delicate Pygmy Rice Rat and koala share a common ancestor at the Class level: Mammalia. (млекопитающие)

Conservation Status

Delicate Pygmy Rice Rat

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Delicate Pygmy Rice Rat	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Delicate Pygmy Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

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.

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.