Central Andes Oldfield Mouse vs koala

Thomasomys contradictus compared with Phascolarctos cinereus

Key Differences

Central Andes Oldfield Mouse is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Central Andes Oldfield Mouse	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rodentia (อันดับสัตว์ฟันแทะ)	Diprotodontia (Marsupials)
Family	Cricetidae	Phascolarctidae (Koalas)
Genus	Thomasomys	Phascolarctos (Koalas)
Species	Thomasomys contradictus	Phascolarctos cinereus

Evolutionary Relationship

Central Andes Oldfield Mouse and koala share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

ดู: Class: Mammalia

Conservation Status

Central Andes Oldfield Mouse

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Central Andes Oldfield Mouse	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Central Andes Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

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.

Central Andes Oldfield Mouse

The Central Andes Oldfield Mouse (Thomasomys contradictus) is a species in the genus Thomasomys. It is currently classified as Data Deficient on the IUCN Red List. Found in Colombia.

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.