Caatinga laucha vs 大齿蟾

Calomys expulsus compared with Oreolalax major

Taxonomic Classification

Rank	Caatinga laucha	大齿蟾
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Amphibia (两栖动物)
Order	Rodentia (啮齿目)	Anura (无尾目)
Family	Cricetidae	Megophryidae
Genus	Calomys	Oreolalax
Species	Calomys expulsus	Oreolalax major

Evolutionary Relationship

Caatinga laucha and 大齿蟾 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Caatinga laucha

LC — Least Concern

大齿蟾

LC — Least Concern

Physical Characteristics

Attribute	Caatinga laucha	大齿蟾
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caatinga laucha

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

大齿蟾

Habitat

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

Caatinga laucha

The Caatinga laucha (Calomys expulsus) is a species in the genus Calomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

大齿蟾

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.