European otter vs Squirrel Treefrog

Lutra lutra compared with Dryophytes squirellus

Key Differences

• European otter is Vulnerable while Squirrel Treefrog is Least Concern.

Taxonomic Classification

Rank	European otter	Squirrel Treefrog
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Amphibia (両生類)
Order	Carnivora (ネコ目)	Anura (カエル)
Family	Mustelidae (Weasels & Otters)	Hylidae
Genus	Lutra (Otters)	Dryophytes
Species	Lutra lutra	Dryophytes squirellus

Evolutionary Relationship

European otter and Squirrel Treefrog share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Squirrel Treefrog

LC — Least Concern

Physical Characteristics

Attribute	European otter	Squirrel Treefrog
Diet	Carnivore	—
Average Lifespan	10 years	—
Average Length	1.0 m	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

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.

Squirrel Treefrog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

European otter

ヨーロッパカワウソ（Lutra lutra）はヨーロッパとアジア全域の清流、渓流、海岸線に生息するスリムな半水生のイタチ科動物です。体長最大1.3メートルに達し、敏感なヒゲで獲物の動きを感知して魚を狩る非常に優れた能力を持っています。豊富な魚がいる汚染されていない水が必要で、淡水生態系の健全性の指標種として知られています。かつて狩猟と汚染によって西ヨーロッパでほぼ絶滅の危機に瀕していましたが、水質改善に伴い個体数が大幅に回復しました。