Colin Varndell / Harvest mouse (Micromus minutus) climbing between ripe Wheat, Dorset, UK, July.

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 / Savanna baboon, olive race (Papio cynocephalus anubis) head portrait of male, reaching out. Masai Mara National Reserve, Kenya. August

Claudio Contreras / Eastern cottontail (Sylvilagus floridanus) cleaning face, Laredo Borderlands, Texas, USA. April

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.

Mark Taylor / Black eared white Boxer puppy, lying with head up and crossed paws, against white background

Suzi Eszterhas / Mountain Gorilla (Gorilla gorilla beringei) silverback resting head in hands, Parc National des Volcans, Rwanda. Endangered species

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

Diane McAllister / Japanese Macaque (Macaca fuscata) positioned on the edge of the hot springs with head on rock, paw under chin, staring, Jigokudani, Japan, January

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) babies hanging in their nursery at Tolga Bat Hospital, North Queensland, Australia, November 2012

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...