Mountain Gorilla

Mountain Gorilla facts at a glance

How big is a mountain gorilla?

An adult mountain gorilla measures 1.7 m long — about 98% of the height of an average adult person (1.73 m) — and weighs around 180 kg, about 2.6× an average adult’s body weight (70 kg).

What is a group of mountain gorillas called?

Explore more animal collective nouns and baby animal names .

Silverback society

Each group centres on a dominant silverback male who leads, protects, and mediates disputes among females and younger males. Groups typically contain 5–30 individuals with strong bonds — grooming, play, and vocalisations maintain cohesion in dense forest where visibility is limited.

High-altitude foraging

Mountain gorillas spend much of the day eating bulky vegetation — wild celery, bamboo shoots, thistles, and nettles — requiring hours of continuous feeding to meet energy needs at cold elevations. They rarely drink standing water, obtaining moisture from plants.

Conservation turnaround

Famously studied by Dian Fossey, mountain gorillas fell to roughly 250 individuals in the 1980s from poaching, habitat loss, and war. Intensive anti-poaching patrols, veterinary care, and ecotourism revenue helped numbers recover past 1,000 — one of conservation's rare success stories.

Ongoing threats

Listed Endangered, mountain gorillas remain confined to two small forest blocks straddling Rwanda, Uganda, and the Democratic Republic of Congo. Political instability, snares set for antelope, disease transmission from humans, and climate-driven habitat shifts still pose risks.

Did you know? Mountain Gorilla facts

• The mountain gorilla is a subspecies of eastern gorilla living in the cloud forests of the Virunga volcanoes and Bwindi Impenetrable Forest, with fewer than 1,100 individuals remaining.
• Roughly 1,000–1,100 individuals in two populations — the Virunga Massif and Uganda's Bwindi Impenetrable Forest — up from about 250 in the 1980s.
• Wild gorillas are generally peaceful herbivores. Silverbacks charge to intimidate threats but rarely attack unless provoked or if a group feels cornered.
• Guided treks in Rwanda's Volcanoes National Park, Uganda's Bwindi and Mgahinga parks, and DRC's Virunga National Park — permits are limited and expensive to fund protection.
• Mountain gorillas (Gorilla beringei beringei) live at high elevation with longer fur and smaller range. Western and eastern lowland gorillas inhabit lowland rainforests and are separate subspecies.
• Conservation: Endangered (IUCN).

Diet & feeding

Mountain Gorilla feeds primarily as a herbivore — leaves, shoots, stems, fruit, and bark. Mountain gorillas spend much of the day eating bulky vegetation — wild celery, bamboo shoots, thistles, and nettles — requiring hours of continuous feeding to meet energy needs at cold elevations. They rarely drink standing water,

Adaptations

• Each group centres on a dominant silverback male who leads, protects, and mediates disputes among females and younger males. Groups typically contain 5–30 individuals with strong bonds — grooming, play, and vocalisations maintain cohesion in dense forest where visibility is limited.
• Mountain gorillas spend much of the day eating bulky vegetation — wild celery, bamboo shoots, thistles, and nettles — requiring hours of continuous feeding to meet energy needs at cold elevations. They rarely drink standing water, obtaining moisture from plants.

Behaviour & ecology

• Each group centres on a dominant silverback male who leads, protects, and mediates disputes among females and younger males. Groups typically contain 5–30 individuals with strong bonds — grooming, play, and vocalisations maintain cohesion in dense forest where visibility is limited.
• Mountain gorillas spend much of the day eating bulky vegetation — wild celery, bamboo shoots, thistles, and nettles — requiring hours of continuous feeding to meet energy needs at cold elevations. They rarely drink standing water, obtaining moisture from plants.
• Famously studied by Dian Fossey, mountain gorillas fell to roughly 250 individuals in the 1980s from poaching, habitat loss, and war. Intensive anti-poaching patrols, veterinary care, and ecotourism revenue helped numbers recover past 1,000 — one of conservation's rare success stories.

Communication

• Mountain Gorilla uses scent, posture, and vocal signals to mark territory and coordinate social behaviour.
• Communication intensity often peaks during breeding seasons and territorial disputes.

Habitat & range

Montane and bamboo cloud forests at 2,200–4,300 m elevation

Ecological role

Mountain Gorilla shapes vegetation through grazing or browsing and serves as prey for larger predators where ranges overlap.

Conservation status of the Mountain Gorilla

Sources & references

This guide is compiled and reviewed against established zoological and conservation references. Key sources for the Mountain Gorilla:

• IUCN Red List of Threatened Species

  Conservation status (Endangered) reflects the IUCN Red List category for Gorilla beringei beringei, most recently assessed in 2018.

• iNaturalist — observations & photos

  Search citizen-science observations and community IDs for Gorilla beringei beringei. Useful for range checks and recent sightings — not a substitute for formal Red List status.

• GBIF — occurrence data

  Global Biodiversity Information Facility species search for Gorilla beringei beringei. Explore published occurrence records used in range research.

• IUCN Red List — Gorilla beringei beringei.

  Conservation status (Endangered) and population trends.

• Animal Diversity Web — Gorilla beringei beringei. University of Michigan Museum of Zoology.

  Life history, morphology, and range.

• Wikipedia — Mountain Gorilla.

  General taxonomy and overview (cross-check primary sources).

• Global Animal Guide editorial standards

  How we research, source, review, and update every guide for accuracy.