Portrait of a young eastern lowland gorilla or Grauer's gorilla (Gorilla beringei graueri)

Mountain gorilla (Gorilla gorilla beringei ) Close-up of face of a Silverback male Virunga National Park, Democratic Republic of Congo

Habituated western lowland gorilla in Dzanga-Sangha, Central African Republic

Habituated western lowland gorilla, Dzanga-Sangha, Central African Republic

July 2007: one silverback male and three female mountain gorillas were killed in the Virunga National Park in the eastern Democratic Republic of Congo (DRC)

Western lowland gorilla juveniles playing.

Western Lowland Gorilla (Gorilla gorilla gorilla), silverback male. Stem-peeling is a favourite feeding technique.

Mountain gorilla (Gorilla gorilla beringei) adult playing with youngster. Mountain gorillas are distributed throughout Uganda, Rwanda and Congo.