Aders' duiker vs Common Lazy Toad

Cephalophus adersi compared with Oreolalax major

Key Differences

• Aders' duiker is Critically Endangered while Common Lazy Toad is Least Concern.

Taxonomic Classification

Rank	Aders' duiker	Common Lazy Toad
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Amphibia (両生類)
Order	Artiodactyla (偶蹄目)	Anura (カエル)
Family	Bovidae (Bovids)	Megophryidae
Genus	Cephalophus	Oreolalax
Species	Cephalophus adersi	Oreolalax major

Evolutionary Relationship

Aders' duiker and Common Lazy Toad share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Aders' duiker

CR — Critically Endangered

Common Lazy Toad

LC — Least Concern

Physical Characteristics

Attribute	Aders' duiker	Common Lazy Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aders' duiker

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Kenya. 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.

Aders' duiker

The Aders' duiker (Cephalophus adersi) is a species in the genus Cephalophus. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeo.

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.