American red squirrel vs koala

Tamiasciurus hudsonicus compared with Phascolarctos cinereus

Key Differences

• American red squirrel is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank	American red squirrel	koala
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Rodentia (Roedores)	Diprotodontia (Marsupials)
Family	Sciuridae (Squirrels)	Phascolarctidae (Koalas)
Genus	Tamiasciurus	Phascolarctos (Koalas)
Species	Tamiasciurus hudsonicus	Phascolarctos cinereus

Evolutionary Relationship

American red squirrel and koala share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

American red squirrel

NE — Not Evaluated

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	American red squirrel	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

American red squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries) and North America (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.

American red squirrel

The American red squirrel (Tamiasciurus hudsonicus) is a species in the genus Tamiasciurus. Typically found in diverse terrestrial and aquatic ecosystems.

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.