koala vs Pallas's squirrel, Red-bellied tree squirrel

Phascolarctos cinereus compared with Callosciurus erythraeus

Key Differences

• koala is Vulnerable while Pallas's squirrel, Red-bellied tree squirrel is Not Evaluated.

Taxonomic Classification

Rank	koala	Pallas's squirrel, Red-bellied tree squirrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Diprotodontia (Marsupials)	Rodentia (Roedores)
Family	Phascolarctidae (Koalas)	Sciuridae (Squirrels)
Genus	Phascolarctos (Koalas)	Callosciurus
Species	Phascolarctos cinereus	Callosciurus erythraeus

Evolutionary Relationship

koala and Pallas's squirrel, Red-bellied tree squirrel share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Pallas's squirrel, Red-bellied tree squirrel

NE — Not Evaluated

Physical Characteristics

Attribute	koala	Pallas's squirrel, Red-bellied tree squirrel
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.

Pallas's squirrel, Red-bellied tree squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (China, Japan), Europe (8 countries), and South America (Argentina).

koala

Icônico marsupial do leste e sudeste da Austrália, os coalas pesam até 15 kg e passam até 22 horas diárias dormindo para conservar energia de sua dieta de folhas de eucalipto, com baixo teor calórico. Altamente especializados para processar os compostos tóxicos do eucalipto que matariam a maioria dos outros mamíferos, possuem microbiomas intestinais unicamente adaptados para a destoxificação. Classificado como Em Perigo em 2022, com populações dizimadas pela doença de clamídia, desmatamento e mudanças climáticas.