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.

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...

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.