Gorille de l'Ouest vs White-thighed Surili

Gorilla gorilla compared with Presbytis siamensis

Key Differences

• Gorille de l'Ouest is Critically Endangered while White-thighed Surili is Near Threatened.

Taxonomic Classification

Rank	Gorille de l'Ouest	White-thighed Surili
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order same	Primates (Primates)	Primates (Primates)
Family	Hominidae (Great Apes)	Cercopithecidae (Old World Monkeys)
Genus	Gorilla (Gorillas)	Presbytis
Species	Gorilla gorilla	Presbytis siamensis

Evolutionary Relationship

Gorille de l'Ouest and White-thighed Surili share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Gorille de l'Ouest

CR — Critically Endangered

Population: ~100.0K

Trend: Decreasing ↓

White-thighed Surili

NT — Near Threatened

Physical Characteristics

Attribute	Gorille de l'Ouest	White-thighed Surili
Diet	Herbivore	—
Average Lifespan	40 years	—
Average Length	1.7 m	—
Average Weight	160.0 kg	—

Habitat & Geographic Range

Gorille de l'Ouest

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 4 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Cameroon, Congo (Republic), Equatorial Guinea, and Gabon. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

White-thighed Surili

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Gorille de l'Ouest

The world's largest primate, western gorillas weigh up to 180 kg and inhabit the tropical and subtropical forests of equatorial Africa. Primarily herbivorous, living in family groups led by a silverback male who protects the troop and mediates social conflicts. Critically Endangered, with populations threatened by deforestation, poaching for bushmeat, and outbreaks of Ebola virus disease.