Big Brown Bat vs Smith's Thorius

Eptesicus fuscus compared with Thorius smithi

Key Differences

• Big Brown Bat is Least Concern while Smith's Thorius is Critically Endangered.

Taxonomic Classification

Rank	Big Brown Bat	Smith's Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Chiroptera (Bats)	Caudata (Caudata)
Family	Vespertilionidae	Plethodontidae
Genus	Eptesicus	Thorius
Species	Eptesicus fuscus	Thorius smithi

Evolutionary Relationship

Big Brown Bat and Smith's Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Brown Bat

LC — Least Concern

Smith's Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Big Brown Bat	Smith's Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Brown Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Colombia, Ecuador, United States, and Venezuela.

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.

Big Brown Bat

The Big Brown Bat (Eptesicus fuscus) is a species in the genus Eptesicus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.