Big Free-tailed Bat vs European otter

Nyctinomops macrotis compared with Lutra lutra

Key Differences

Big Free-tailed Bat is Least Concern while European otter is Vulnerable.

Taxonomic Classification

Rank	Big Free-tailed Bat	European otter
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class same	Mammalia (memeliler)	Mammalia (memeliler)
Order	Chiroptera (yarasa)	Carnivora (etçiller)
Family	Molossidae	Mustelidae (Weasels & Otters)
Genus	Nyctinomops	Lutra (Otters)
Species	Nyctinomops macrotis	Lutra lutra

Evolutionary Relationship

Big Free-tailed Bat and European otter share a common ancestor at the Class level: Mammalia. (memeliler)

Göster Class: Mammalia

Conservation Status

Big Free-tailed Bat

LC — Least Concern

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Big Free-tailed Bat	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Big Free-tailed Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Big Free-tailed Bat

The Big Free-tailed Bat (Nyctinomops macrotis) is a species in the genus Nyctinomops. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.