Allen's Big-eared Bat vs Otter, Fischotter

Idionycteris phyllotis compared with Lutra lutra

Key Differences

Allen's Big-eared Bat is Least Concern while Otter, Fischotter is Vulnerable.

Taxonomic Classification

Rank	Allen's Big-eared Bat	Otter, Fischotter
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Chiroptera (Fledertiere)	Carnivora (Raubtiere)
Family	Vespertilionidae	Mustelidae (Weasels & Otters)
Genus	Idionycteris	Lutra (Otters)
Species	Idionycteris phyllotis	Lutra lutra

Evolutionary Relationship

Allen's Big-eared Bat and Otter, Fischotter share a common ancestor at the Class level: Mammalia. (Säugetiere)

Ansehen Class: Mammalia

Conservation Status

Allen's Big-eared Bat

LC — Least Concern

Otter, Fischotter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Allen's Big-eared Bat	Otter, Fischotter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Allen's Big-eared Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Otter, Fischotter

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.

Allen's Big-eared Bat

The Allen's Big-eared Bat (Idionycteris phyllotis) is a species in the genus Idionycteris. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Otter, Fischotter

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.