Common Lazy Toad vs Eurasian beaver

Oreolalax major compared with Castor fiber

Key Differences

• Common Lazy Toad is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Common Lazy Toad	Eurasian beaver
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class	Amphibia (земноводные)	Mammalia (млекопитающие)
Order	Anura (бесхвостые земноводные)	Rodentia (грызуны)
Family	Megophryidae	Castoridae (Beavers)
Genus	Oreolalax	Castor (Beavers)
Species	Oreolalax major	Castor fiber

Evolutionary Relationship

Common Lazy Toad and Eurasian beaver share a common ancestor at the Phylum level: Chordata. (хордовые)

Conservation Status

Common Lazy Toad

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Common Lazy Toad	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Lazy Toad

Habitat

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

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Common Lazy Toad

The Common Lazy Toad (<em>Oreolalax major</em>) is an amphibian in the family Megophryidae, classified as Least Concern on the IUCN Red List. The species typically inhabits freshwater habitats, moist forests, and wetlands, favoring cool, humid environments associated with mountain streams and adjacent riparian vegetation. As a member of the family Megophryidae, it is adapted to fast-flowing, clear mountain streams where larvae typically develop among leaf litter and gravel on the stream bed. The Common Lazy Toad is generally associated with the highland and montane zones of its range, relying on intact forest cover and unpolluted water bodies for reproduction and larval development. Its Least Concern status reflects an assessment of stable population trends, though like many amphibians it may be sensitive to changes in water quality, habitat loss, and emerging infectious diseases such as chytridiomycosis. Biological traits of this species remain poorly documented in the scientific literature.

Eurasian beaver

Eurasian beaver (Castor fiber) 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.