Anderson's Salamander vs Common Lazy Toad

Ambystoma andersoni compared with Oreolalax major

Key Differences

• Anderson's Salamander is Critically Endangered while Common Lazy Toad is Least Concern.

Taxonomic Classification

Rank	Anderson's Salamander	Common Lazy Toad
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Amphibia (Anfíbios)	Amphibia (Anfíbios)
Order	Caudata (caudados)	Anura (Frogs & Toads)
Family	Ambystomatidae	Megophryidae
Genus	Ambystoma	Oreolalax
Species	Ambystoma andersoni	Oreolalax major

Evolutionary Relationship

Anderson's Salamander and Common Lazy Toad share a common ancestor at the Class level: Amphibia. (Anfíbios)

Conservation Status

Anderson's Salamander

CR — Critically Endangered

Common Lazy Toad

LC — Least Concern

Physical Characteristics

Attribute	Anderson's Salamander	Common Lazy Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Anderson's Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Lazy Toad

Habitat

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

Anderson's Salamander

The Anderson's Salamander (Ambystoma andersoni) is a species in the genus Ambystoma. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neo.

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.