Ardilla Gris Oriental vs koala

Sciurus carolinensis compared with Phascolarctos cinereus

Key Differences

• Ardilla Gris Oriental is Not Evaluated while koala is Vulnerable.
• Ardilla Gris Oriental is omnivore while koala is herbivore.
• koala is 20.0x heavier than Ardilla Gris Oriental.
• koala lives longer (15 years vs 6 years).

Taxonomic Classification

Rank	Ardilla Gris Oriental	koala
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Diprotodontia (Marsupials)
Family	Sciuridae (Squirrels)	Phascolarctidae (Koalas)
Genus	Sciurus (Tree Squirrels)	Phascolarctos (Koalas)
Species	Sciurus carolinensis	Phascolarctos cinereus

Evolutionary Relationship

Ardilla Gris Oriental and koala share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Ardilla Gris Oriental

NE — Not Evaluated

Trend: Stable →

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Ardilla Gris Oriental	koala
Diet	Omnivore	Herbivore
Average Lifespan	6 years	15 years
Average Length	25 cm	75 cm
Average Weight	500 g	10.0 kg

Habitat & Geographic Range

Ardilla Gris Oriental

Habitat

Typically found in a wide range of habitat types.

Range

Widely distributed across Africa (South Africa), Asia (Indonesia), Europe (10 countries), and North America (Mexico, United States).

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.

Ardilla Gris Oriental

Native to eastern North America but successfully introduced to Europe and other regions, the eastern gray squirrel is a medium-sized arboreal rodent weighing up to 600 g. Highly adaptable, thriving in forests, parks, and urban gardens, gray squirrels cache thousands of nuts and seeds each autumn, inadvertently planting trees through forgotten caches. In Britain, they have largely displaced the native red squirrel by outcompeting them for food.

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.