Amazonian Nectomys vs Koala

Nectomys rattus compared with Phascolarctos cinereus

Key Differences

Amazonian Nectomys is Least Concern while Koala is Vulnerable.

Taxonomic Classification

Rank	Amazonian Nectomys	Koala
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Rodentia (Nagetiere)	Diprotodontia (Marsupials)
Family	Cricetidae	Phascolarctidae (Koalas)
Genus	Nectomys	Phascolarctos (Koalas)
Species	Nectomys rattus	Phascolarctos cinereus

Evolutionary Relationship

Amazonian Nectomys and Koala share a common ancestor at the Class level: Mammalia. (Säugetiere)

Ansehen Class: Mammalia

Conservation Status

Amazonian Nectomys

LC — Least Concern

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Amazonian Nectomys	Koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Amazonian Nectomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.

Amazonian Nectomys

The Amazonian Nectomys (Nectomys rattus) is a species in the genus Nectomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.