Thomas Marent / Japanese Macaque (Macaca fuscata) mother holding baby for warmth, Jigokudani, Nagano, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) female holding her baby, Jigokudani Monkey Park, Japan

Fiona Rogers / Japanese Macaque (Macaca fuscata) female cuddling her baby, Jigokudani Monkey Park, Japan

Cyril Ruoso / Bonobo (Pan paniscus) female with newborn, Sanctuary Lola Ya Bonobo Chimpanzee, Democratic Republic of the Congo

Cyril Ruoso / Bonobo (Pan paniscus) pair of orphans hugging, Sanctuary Lola ya Bonobo, Democratic Republic of the Congo

Suzi Eszterhas / Mountain Gorilla (Gorilla gorilla beringei) mother holding five month old twin babies, Parc National des Volcans, Rwanda

Suzi Eszterhas / Mountain Gorilla (Gorilla gorilla beringei) mother holding five month old twin babies, Parc National des Volcans, Rwanda

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' holding her daughter 'Ursula' age 4. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilitate...

Bert Willaert / Amplectant pair of Natterjack Toads (Epidalea / Bufo calamita) with reflection in water. Belgium, Europe, July.

Lisa Hoffner / Keeper and a rescued Elephant orphan (Loxodonta africana) embracing. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2008. Model released

Juergen Freund / Mating Green turtles (Chelonia mydas) in the reef shallows. Sipadan Island, Sabah, Malaysia, June

Tui De Roy / Galapagos Sea Lion (Zalophus wollebaeki) female and pup nuzzling, Galapagos Islands, Ecuador