Gray Birch Mouse vs Smith's Thorius

Sicista pseudonapaea compared with Thorius smithi

Key Differences

• Gray Birch Mouse is Data Deficient while Smith's Thorius is Critically Endangered.

Taxonomic Classification

Rank	Gray Birch Mouse	Smith's 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 pseudonapaea	Thorius smithi

Evolutionary Relationship

Gray Birch Mouse and Smith's Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray Birch Mouse

DD — Data Deficient

Smith's Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Gray Birch Mouse	Smith's Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Smith's 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.