Altai Birch Mouse vs Surprise Thorius

Sicista napaea compared with Thorius insperatus

Key Differences

• Altai Birch Mouse is Least Concern while Surprise Thorius is Critically Endangered.

Taxonomic Classification

Rank	Altai Birch Mouse	Surprise Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Rodentia (Rodents)	Caudata (Caudata)
Family	Dipodidae	Plethodontidae
Genus	Sicista	Thorius
Species	Sicista napaea	Thorius insperatus

Evolutionary Relationship

Altai Birch Mouse and Surprise Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Altai Birch Mouse

LC — Least Concern

Surprise Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Altai Birch Mouse	Surprise Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Altai Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Surprise Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

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

Altai Birch Mouse

The Altai Birch Mouse (Sicista napaea) is a species in the genus Sicista. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.