Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus), orphaned female pup sucking on a dummy, cradled on "mamma roll"; and in hand of wildlife carer. Black Rock Animal Shelter, Beaumaris, Melbourne, Victor...

Doug Gimesy / Rena Gaborov feeding some of her eastern grey kangaroo (Macropus giganteus) orphans in her mother in law's shed. Rena and her partner Joseph had to evacuate their wildlife (wombats, possums and kangar...

Juergen Freund / Wildlife carer Margit Cianelli holding Platypus (Ornithorhynchus anatinus) orphan, Atherton Tablelands, Queensland, Australia. Model released.

Klein & Hubert / Common hedgehog (Erinaceus europaeus) young orphan, curled in a ball in grass. France.

Neil Aldridge / Five orphaned White rhinoceros (Ceratotherium simum) calves feed from a trough at dusk at the Rhino Revolution orphanage near Hoedspruit, South Africa. The mothers of these rhinos were killed by poach...

Juergen Freund / Margit Cianelli with Lumholtz tree kangaroo (Dendrolagus lumholtzi) 'Kimberley', a kangaroo she raised from a baby, now living in nearby forest with her own joey. Lumholtz Lodge, Atherton Tabl...

Juergen Freund / Northern quoll (Dasyurus hallucatus) orphan babies, sleeping on hot water bottle, Atherton Tablelands, Queensland, Australia.

Suzi Eszterhas / Chinese pangolin (Manis pentadactyla), orphaned baby in arms of research assistant. Taipei Zoo, Taipei, Taiwan. 2015. Captive. Model released.

Inaki Relanzon / African elephant (Loxodonta africana) baby with keeper at David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / Tourists watching and petting African elephant (Loxodonta africana) calf. David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / Keeper interacting with young African elephant (Loxodonta africana) after feeding it, David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / Keeper with young African elephant (Loxodonta africana) calf at David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / Photographer Inaki Relanzon with African elephant (Loxodonta africana) calf at David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / Keeper examining African elephant calf's (Loxodonta africana) trunk, David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Cyril Ruoso / Bonobo (Pan paniscus) orphan babies, Lola Ya Bonobo Sanctuary, Democratic Republic of the Congo. Non-ex

Cyril Ruoso / Surrogate mother holding orphan Bonobo (Pan paniscus) and her own baby Lola ya Bonobo Sanctuary, Democratic Republic of the Congo.

Cyril Ruoso / Volunteer feeding young Chimpanzees (Pan troglodytes) Pandrillus Sanctury Rehabilitation Centre, Nigeria.

Paul Williams / Javan slow loris (Nycticebus javanicus) rescued by Jakarta Animal Aid Network (JAAN), in holding cage, Animal rescue centre, Jakarta, Indonesia. Critically Endangered. Post production to remove light...

Edwin Giesbers,Edwin Giesbers / Hedgehog (Erinaceus europaeus) one week old orphan at rescue centre, captive

Edwin Giesbers / Hedgehog (Erinaceus europaeus) rear view of young orphan at rescue centre, captive

Mark MacEwen / Orangutan (Pongo pygmaeus) orphan juvenile in nursery, sleeping on toys. Nyaru Menteng Orangutan Reintroduction Project, Central Kalimantan, Borneo, Indonesia.

Claudio Contreras / Central American Spider Monkey (Ateles geoffroyi) orphan baby hanging from washing line. El Mirador- Rio Azul National Park, Department of Peten, Guatemala.

Juergen Freund / Crate of Spectacled flying fox (Pteropus conspicillatus) babies just arrived by plane from Brisbane after months of care, ready to be returned to the Tolga Bat Hospital for release back to the wild, A...

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) babies swaddled in cloth ready to sleep, Tolga Bat Hospital, Atherton, North Queensland, Australia. January 2008.

Lisa Hoffner / A baby orphan Elephant (Loxodonta africana), named Murka, wounded by a poacher's spear is comforted by the touch of another elephant's trunk from outside its pen. David Sheldrick Wildlife Trust Eleph...

Lisa Hoffner / A baby orphan Elephant (Loxodonta africana) leaning against the rump of its friend. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, August 2010.

Lisa Hoffner / Two orphan baby Elephants (Loxodonta africana) being affectionate. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

Lisa Hoffner / A young orphan Elephant (Loxodonta africana) being bottle fed milk by its keeper. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010. Model released.

Lisa Hoffner / Young orphan Elephants (Loxodonta africana) out on a walk. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

Lisa Hoffner / Young orphan Elephants (Loxodonta africana) out on a walk. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

Lisa Hoffner / Elephant keeper with his young orphan Elephants (Loxodonta africana). David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010. Model released.

Lisa Hoffner / A group of rescued orphan baby Elephants (Loxodonta africana). David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

Lisa Hoffner / Orphan baby Elephants (Loxodonta africana) playing football with their keeper. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010. Model released.

Lisa Hoffner / Orphan baby Elephants (Loxodonta africana) being taken for a walk by their keepers. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

Lisa Hoffner / Orphan Rhinoceros (Ceratotherium simum) and Elephant (Loxodonta africana) with blankets on their backs. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, July 2010.

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

Lisa Hoffner / Orphan elephant (Loxodonta africana) flings red dirt during its daily dust bath. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, April 2007.

Lisa Hoffner / Hungry orphan elephants (Loxodonta africana) greet the milk delivery trailer. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, April 2007. Model released

Mark Carwardine / Chimpanzee (Pan troglodytes) portrait, Captive, rescued as an orphan, Ngamba Island Chimpanzee Sanctuary, Uganda, Africa, Endangered species, October

Karl Ammann / Baby Western lowland gorilla (Gorilla g gorilla) head portrait - victim of the illegal bushmeat and pet trade, Pointe Nior, Congo, Central Africa. After shooting an adult gorilla, bushmeat hunters cap...

Karl Ammann / Baby Western lowland gorilla (Gorilla g gorilla), victim of the illegal bushmeat and pet trades, Central Africa. After shooting an adult gorilla, bushmeat hunters capture the babies for additional pro...

Ingo Arndt / Orphan one-week-old Hedgehog baby {Erinaceus europaeus} Germany

Anup Shah / Chimpanzee (Pan troglodytes) portrait of juvenile orphan, Sweetwater Sanctuary, 4 yr old, Mahesa with 'pant hoot' expression, a distinctive vocalisation, often used as a contact call (useful in forest...

Anup Shah / Portrait of of juvenile orphaned Chimpanzee {Pan troglodytes}, 2 year old Naika, Sweetwater Sanctuary, Kenya, captive

Martha Holmes / Young orphan chimpanzee (Pan troglodytes) captive, Zambia