Big-footed Thorius vs Northern Birch Mouse

Thorius magnipes compared with Sicista betulina

Key Differences

• Big-footed Thorius is Critically Endangered while Northern Birch Mouse is Least Concern.

Taxonomic Classification

Rank	Big-footed Thorius	Northern Birch Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Rodentia (Rodents)
Family	Plethodontidae	Dipodidae
Genus	Thorius	Sicista
Species	Thorius magnipes	Sicista betulina

Evolutionary Relationship

Big-footed Thorius and Northern Birch Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big-footed Thorius

CR — Critically Endangered

Northern Birch Mouse

LC — Least Concern

Physical Characteristics

Attribute	Big-footed Thorius	Northern Birch Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big-footed Thorius

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Northern Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Denmark, Norway, Russia, Sweden, and Ukraine.

Big-footed Thorius

The Big-footed Thorius (Thorius magnipes) is a species in the genus Thorius. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neo