Common Lazy Toad vs Heaviside-Delfin

Oreolalax major compared with Cephalorhynchus heavisidii

Key Differences

• Common Lazy Toad is Least Concern while Heaviside-Delfin is Near Threatened.

Taxonomic Classification

Rank	Common Lazy Toad	Heaviside-Delfin
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Amphibia (Amphibien)	Mammalia (Säugetiere)
Order	Anura (Froschlurche)	Cetacea (Whales & Dolphins)
Family	Megophryidae	Delphinidae (Oceanic Dolphins)
Genus	Oreolalax	Cephalorhynchus
Species	Oreolalax major	Cephalorhynchus heavisidii

Evolutionary Relationship

Common Lazy Toad and Heaviside-Delfin share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Common Lazy Toad

LC — Least Concern

Heaviside-Delfin

NT — Near Threatened

Physical Characteristics

Attribute	Common Lazy Toad	Heaviside-Delfin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Lazy Toad

Habitat

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

Heaviside-Delfin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.