Gray-shanked Douc Langur vs Lesser Siren

Pygathrix cinerea compared with Siren intermedia

Key Differences

• Gray-shanked Douc Langur is Critically Endangered while Lesser Siren is Least Concern.

Taxonomic Classification

Rank	Gray-shanked Douc Langur	Lesser Siren
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Primates (Primates)	Caudata (Caudata)
Family	Cercopithecidae (Old World Monkeys)	Sirenidae
Genus	Pygathrix	Siren
Species	Pygathrix cinerea	Siren intermedia

Evolutionary Relationship

Gray-shanked Douc Langur and Lesser Siren share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-shanked Douc Langur

CR — Critically Endangered

Lesser Siren

LC — Least Concern

Physical Characteristics

Attribute	Gray-shanked Douc Langur	Lesser Siren
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-shanked Douc Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Lesser Siren

Habitat

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

Range

Distributed across Belgium and Mexico.