Ear-spot Squirrel vs koala

Callosciurus adamsi compared with Phascolarctos cinereus

Key Differences

• Ear-spot Squirrel is Near Threatened while koala is Vulnerable.

Taxonomic Classification

Rank	Ear-spot Squirrel	koala
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Rodentia (Bộ Gặm nhấm)	Diprotodontia (Thú hai răng trước)
Family	Sciuridae (Squirrels)	Phascolarctidae (Koalas)
Genus	Callosciurus	Phascolarctos (Koalas)
Species	Callosciurus adamsi	Phascolarctos cinereus

Evolutionary Relationship

Ear-spot Squirrel and koala share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Ear-spot Squirrel

NT — Near Threatened

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Ear-spot Squirrel	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Ear-spot Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.