Eric Baccega / Young man from the Bodi Tribe having new scars made on his chest with razor blade, to make decorative skin scarifications. Omo Valley, Ethiopia, March 2015.

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) juvenile female 'Bokata' aged 6 years head and shoulders portrait looking at fingers, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central A...

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) adolescent female 'Glitter' aged 13 years head and shoulders portrait. Gombe National Park, Tanzania.

Enrique Lopez-Tapia / Nalu boy covering himself with blue powder whilst preparing for a ritual dance, Cabedu village, Guinea-Bissau, December 2013.

Anup Shah / Japanese Macaque (Macaca fuscata) mother and hands of offspring, Jigokudani Monkey Park, Japan

Fiona Rogers / Western lowland gorilla sub-adult male 'Kunga' aged 13 years head and shoulders portrait (Gorilla gorilla gorilla). Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. Dec...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) sub-adult male 'Kunga' aged 13 years head and shoulders portrait, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. Dec...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) sub-adult male 'Kunga' aged 13 years head and shoulders portrait, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. Dec...

Stephen Belcher / Orangutan (Pongo pygmaeus) baby held in its mothers hands, Tanjung Puting National Park, Borneo, Malaysia, Indonesia

Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) juvenile raising hands out of hot spring, Jigokudani, Nagano, Japan