Peale’s Free-tailed Bat vs Stoat, Ermine

Nyctinomops aurispinosus compared with Mustela erminea

Key Differences

• Peale’s Free-tailed Bat is Least Concern while Stoat, Ermine is Vulnerable.

Taxonomic Classification

Rank	Peale’s Free-tailed Bat	Stoat, Ermine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Chiroptera (Bats)	Carnivora (Carnivorans)
Family	Molossidae	Mustelidae (Weasels & Otters)
Genus	Nyctinomops	Mustela
Species	Nyctinomops aurispinosus	Mustela erminea

Evolutionary Relationship

Peale’s Free-tailed Bat and Stoat, Ermine share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Peale’s Free-tailed Bat

LC — Least Concern

Stoat, Ermine

VU — Vulnerable

Physical Characteristics

Attribute	Peale’s Free-tailed Bat	Stoat, Ermine
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Peale’s Free-tailed Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Stoat, Ermine

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Australasia and Indomalayan and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Indonesia), Europe (6 countries), North America (United States), and Oceania and the Pacific (New Zealand). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Stoat, Ermine

Stoat, Ermine (Mustela erminea) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.