Gerry Ellis / Chimpanzee (Pan troglodytes) orphans, Larry investigating Daphne's tongue, Ape Action Africa, Mefou Primate Sanctuary, Cameroon

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

Edwin Giesbers,Edwin Giesbers / Hedgehog (Erinaceus europaeus) one week old 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.

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) babies or bubs wrapped in cloth in the nursery at Tolga Bat Hospital, North Queensland, Australia, November 2012

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) babies or bubs wrapped in cloth and teats in mouths ready for feeding in the nursery at Tolga Bat Hospital, North Queensland, Australia, November 2012

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

Juergen Freund / Spectacled flying foxes (Pteropus conspicillatus) inside enclosure, Tolga Bat Hospital, Atherton, North Queensland, Australia. January 2008.

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

Anup Shah / Chimpanzee {Pan troglodytes} orphaned 2 year old juvenile, resting against branch, Sweetwater Sanctuary, Kenya

Anup Shah / Chimpanzee {Pan troglodytes} grooming companion Sweetwater Sanctuary, Mahesa, Kenya

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...