Anup Shah / Bonobo (Pan paniscus) female 'Nioki' carrying her baby 'Bomango' aged 10 months on her back, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Anup Shah / Mountain gorilla silverback knuckle walking (Gorilla gorilla beringei) Rwanda, Parcs des Volcans

Anup Shah / Male Chimpanzee 'Sheldon' knuckle walking carrying dead Red colobus monkey in jaws {Pan troglodytes schweinfurtheii}, 19-years-old, high ranking male of Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Female Chimpanzee 'Patti' (39-years-old) carries jockey-riding offspring 'Tarzan' on her back {Pan troglodytes schweinfurtheii}, Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Chimpanzee mother 'Gremlin' carries female twins 'Golden' (in front) and 'Glitta' (behind) {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) males knuckle walking along the shore of Lake Tanganyika . Gombe National Park, Tanzania. May 2014.

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) five year old infant male, named Google, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) male, eighteen years old, followed by troop, Gombe National Park, Tanzania

Juergen & Christine Sohns / Chimpanzee (Pan troglodytes) mother carrying young, Singapore Zoo, Singapore

Juergen & Christine Sohns / Chimpanzee (Pan troglodytes) sub-adult running, Singapore Zoo, Singapore

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) males walking along forest floor, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) infant male, one year old, running, Gombe National Park, Tanzania