Bridge Roller vs Common Lazy Toad

Ancylis uncella compared with Oreolalax major

Taxonomic Classification

Rank	Bridge Roller	Common Lazy Toad
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Arthropoda (สัตว์ขาปล้อง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Insecta (แมลง)	Amphibia (สัตว์สะเทินน้ำสะเทินบก)
Order	Lepidoptera (ผีเสื้อ)	Anura (อันดับกบ)
Family	Tortricidae	Megophryidae
Genus	Ancylis	Oreolalax
Species	Ancylis uncella	Oreolalax major

Evolutionary Relationship

Bridge Roller and Common Lazy Toad share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Bridge Roller

LC — Least Concern

Common Lazy Toad

LC — Least Concern

Physical Characteristics

Attribute	Bridge Roller	Common Lazy Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bridge Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Common Lazy Toad

Habitat

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

Bridge Roller

The Bridge Roller (Ancylis uncella) is a species in the genus Ancylis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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.