Big Brown Bat vs brown slug

Eptesicus fuscus compared with Deroceras laeve

Taxonomic Classification

Rank	Big Brown Bat	brown slug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Chiroptera (Bats)	Stylommatophora (Stylommatophora)
Family	Vespertilionidae	Agriolimacidae
Genus	Eptesicus	Deroceras
Species	Eptesicus fuscus	Deroceras laeve

Evolutionary Relationship

Big Brown Bat and brown slug share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Big Brown Bat

LC — Least Concern

brown slug

LC — Least Concern

Physical Characteristics

Attribute	Big Brown Bat	brown slug
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.

brown slug

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, tropical and subtropical moist broadleaf forests, and temperate broadleaf and mixed forests, among 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cabo Verde, Sao Tome and Principe, South Africa), Asia (4 countries), Europe (9 countries), North America (Guatemala, Mexico, United States), Oceania and the Pacific (New Zealand), and South America (5 countries).

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.

brown slug

The Brown Slug (Deroceras laeve) is a species in the genus Deroceras. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical dry broadleaf forests, tropical and subtropical moist broadleaf forests, and temperate broadleaf and mixed forests, among 7 distinct biome types. Populations are also fo

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇨🇴 Colombia 🇺🇸 United States