Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, foraging for insects in log, Gombe National Park, Tanzania

Cyril Ruoso / Chimpanzee (Pan troglodytes) using stick to forage for prey in small tree cavity, Bossou, Guinea

Cyril Ruoso / Chimpanzee (Pan troglodytes) using stick to forage for prey in small tree cavity, Bossou, Guinea

Ingo Arndt / Chimpanzee (Pan troglodytes) juvenile fishing for termites, endangered, Gombe Stream National Park, Tanzania

Anup Shah / Male Chimpanzee + young fishing for termites, Gombe NP, Tanzania 2003 'Gremlin'

Karl Ammann / Young Chimpanzees using grass stems to extract termites from mound {Pan troglodytes} in sanctuary, Kenya

Anup Shah / Female juvenile Chimpanzee 'Golden' has learnt from her mother how to use a stem as a tool to remove termites from a termite mound {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanza...

Anup Shah / Female Chimpanzee 'Gremlin' demonstrates to offspring how to use a stem as a tool to remove termites from a termite mound {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) female 'Nasa' aged 25 years watching the G Family termite fishing . Gombe National Park, Tanzania. September 2014.

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, foraging for insects in log, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) ten year old juvenile male, named Gimli, foraging for insects in log, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) six year old juvenile female, named Tabora, termite fishing, Gombe National Park, Tanzania