Cyril Ruoso / Verreaux's Sifaka (Propithecus verreauxi) trio huddling, vulnerable, Berenty Private Reserve, Madagascar

Anup Shah / Olive baboon (Papio cynocephalus anubis) juvenile cuddling an infant aged 9-12 months, Masai Mara National Reserve, Kenya, August

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' cuddling her daughter 'Ursula', age 4 years. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Reha...

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' cuddling her daughter 'Ursula' aged 4 - portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010....

Florian Möllers / Golden snub-nosed monkeys (Rhinopithecus roxellana qinlingensis) family group / harem resting / sleeping / cuddling, Zhouzhi Nature Reserve, Qinling mountains, Shaanxi, China, April 2006

Vincent Grafhorst / Black-faced Vervet Monkey (Cercopithecus aethiops) baby clinging to mother, Moremi Game Reserve, Okavango Delta, Botswana

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} two monkeys huddle together to keep warm, Jigokudani, Nagano, Japan

ZSSD / Rothschild Giraffe (Giraffa camelopardalis rothschildi) mother nuzzling calf, native to Africa

Ingo Arndt / European River Otter (Lutra lutra) sisters resting, Europe

Ingo Arndt / European River Otter (Lutra lutra) sisters resting, Europe

Jean-Pierre Zwaenepoel / Southern plains grey / Hanuman langur {Semnopithecus dussumieri} adult females embracing, Thar desert, Rajasthan, India

Matthias Breiter / Polar Bear (Ursus maritimus) female with twelve week old cub, Canada