Anup Shah / Young Eastern common chimpanzee {Pan troglodytes schweinfurtheii} Opal's baby, Mahale NP, Tanzania.

Anup Shah / Young Eastern common chimpanzee {Pan troglodytes schweinfurtheii} Opal's baby, Mahale NP, Tanzania.

Eric Baccega / Chimpanzee female (Pan troglodytes schweinfurthii) sleeping in a nest built in a tree, Kibale National Park, Uganda, January.

Eric Baccega / Chimpanzee juvenile (Pan troglodytes schweinfurthii) in a tree. Kibale National Park, Uganda. January.

Eric Baccega / Chimpanzee male (Pan troglodytes schweinfurthii) sleeping on the forest floor with feet up, Kibale National Park, Uganda. January.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) juvenile female 'Fadhila' aged 5 years and her brother 'Fifty' aged 3 years playing together.Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Fifty' aged 3 years portrait.Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) alpha male 'Ferdinand' aged 20 years, females Nuru' aged 22 years and 'Nasa' aged 24 years calling. Gombe National Park, Tanzania. June 2012.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 41 years grooms her daughter 'Golden' aged 14 years while their infants 'Gizmo' aged 3 years and 'Glamma' aged 9 months sit b...

Jabruson / Mummified infant Chimpanzee (Pan troglodytes) a relic from research from 1959, amongst old laboratory paraphernalia and assorted zoological specimens. CRSN (Centre de Recherche en Sciences Naturelles...

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) young baby of adolescent female 'Golden' suckling. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) male 'Faustino' aged 22 years walking along a track preparing to display. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) adult male 'Frodo' aged 35 years portrait. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years holding her daughter 'Glitter's' baby daught aged 2 months and her own infant son aged 2 years. With 'Glitter' aged...

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years holding female baby aged 2, her granddaughter. Gombe National Park, Tanzania. Gremlin took the new born baby from he...

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Gizmo' aged 2 years lying on the forest floor. Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Gizmo' aged 2 years, portrait. Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Google' aged 2 years, portrait. Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Gremlin' aged 40 years calling while holding her baby granddaughter aged 2 months and her own infant son aged 2 years. Gombe National Park,...

Jabruson Motion / Group of Chimpanzees (Pan troglodytes) playing in an enclosure and drinking from bottles, Lwiro Primate Rehabilitation Center, South Kivu, Democratic Republic of Congo. Captive.

Cyril Ruoso / Chimpanzee (Pan troglodytes) close up portrait, Bakoumba sanctuary, Gabon. Non-ex

Cyril Ruoso / Volunteer feeding young Chimpanzees (Pan troglodytes) Pandrillus Sanctury Rehabilitation Centre, Nigeria.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) male 'Freud' aged 40 years head portrait. Gombe National Park, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant female 'Safi' aged 2 years with female 'Nasa' aged 23 years. Gombe National Park, Tanzania.

Konrad Wothe / Male Chimpanzees (Pan troglodytes) attacking the alpha male of their troop, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, with a baby in the background, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzees (Pan troglodytes) in a tree using pieces of grass to pull ants from a hole to eat, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Chimpanzee (Pan troglodytes) sitting in the rain, Mahale Mountains National Park, Tanzania.

Konrad Wothe / Showreel of Male Chimpanzees (Pan troglodytes) attacking the alpha male of their troop, Mahale Mountains National Park, Tanzania.

Jabruson / Chimpanzee (Pan troglodytes schweinfurthii) in cage, confiscated from poachers, housed in Epulu, Okapi Wildlife Reserve, Orientale Province, North-East, Democratic Republic of Congo

Jabruson / Young Chimpanzee in fruiting fig tree (Pan troglodytes schweinfurthii) Tongo, Virunga National Park, Kivu, Democratic Republic of Congo

Suzi Eszterhas / Chimpanzee (Pan troglodytes) infant age 7 months, peeking out of grooming group, tropical forest, Western Uganda

Fiona Rogers / Western chimpazee (Pan troglodytes verus) female 'Fanle' aged 13 years with suckling infant male 'Flanle' aged 3 years, Bossou Forest, Mont Nimba, Guinea. January 2011.

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Jeje' aged 13 years walking through a forest clearing, Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzee (Pan troglodytes verus) juvenile female 'Joya' aged 6 years using rocks as tools to crack open palm oil nuts, Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Jeje' aged 13 years using a tool made from a stem for 'Algae Scooping', Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzee (Pan troglodytes verus) juvenile female 'Joya' aged 6 years feeding on fern leaves, Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzee (Pan troglodytes verus) juvenile female 'Joya' aged 6 years feeding on fern leaves, Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzees female 'Jire' aged 52 and her daughter 'Joya' aged 6 years and son 'Jeje' aged 13 years feeding on palm oil fruits stored by villagers, Bossou Forest, Mont Nimba, Guinea. December...

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Jeje' aged 13 years walking through the forest, wide angle perspective, Bossou Forest, Mont Nimba, Guinea. January 2011.

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Jeje' aged 13 years being groomed by young male 'Peley' aged 12 years, Bossou Forest, Mont Nimba, Guinea. January 2011.

Anup Shah / Western chimpanzee (Pan troglodytes verus) female 'Fanle' aged 13 years and protecting her infant son 'Flanle' aged 3 years from an aggressive male, Bossou Forest, Mont Nimba, Guinea. January 2011.

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Peley' aged 12 years making 'Pant hoot' vocalisation, Bossou Forest, Mont Nimba, Guinea. January 2011.

Anup Shah / Western chimpanzee (Pan troglodytes verus) males 'Jeje' aged 13 years, 'Tua' aged 53 years and 'Peley' aged 12 years grooming, Bossou Forest, Mont Nimba, Guinea. January 2011.

Konrad Wothe / Chimpanzee (Pan troglodytes) fishing for ants with stick, Mahale Mountains National Park, Tanzania, East Africa

Konrad Wothe / Young Chimpanzee (Pan troglodytes) in tree, Mahale Mountains National Park, Tanzania, East Africa