Anup Shah / Female Chimpanzee 'Fanni' with offspring 'Fundi' (male, 17-months-old) and Fudge (male, 4-years-10-months-old) {Pan troglodytes schweinfurtheii}, Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Female Chimpanzee 'Fifi' (44-years-old) rests with her ninth baby 'Furaha' (one-week-old) {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanzania. 2002

Laurent Geslin / Domestic cat {Felis catus} mothering baby Hedgehogs {Erinaceus europaeus} France

Juergen Freund / A pig (Sus scrofa domestica) mothering a dog (Canis familiaris). Northern Palawan, Philippines, May 2009.

Jane Burton / Unspeyed bitch has taken over her daughter's 4-day pups. Dogs phantom pregnancy coincided with the birth of her daughters pups

Gerry Ellis / African Elephant (Loxodonta africana) orphans, Malaika mothering a pair of young orphans, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / African Elephant (Loxodonta africana) orphans, Malaika mothering Natumi, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / African Elephant (Loxodonta africana) orphans, Malaika mothering Natumi, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Gerry Ellis / African Elephant (Loxodonta africana) orphan called Malalka, mothering a pair of young orphans, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Anup Shah / Chimpanzee mother Fifi gathering young Flirt in her arms {Pan troglodytes schweinfurthii} Gombe Tanzania

Anup Shah / Female Chimpanzee 'Fifi' (43-years-old) carries jockey-riding 'Flirt' (3-years-3-months-old) on her back {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanzania. 2002

Anup Shah / Female Chimpanzee 'Fanni' with offspring 'Fundi' (male, 17-months-old) and Fudge (male, 4-years-10-months-old) {Pan troglodytes schweinfurtheii}, Kasekela community, Gombe NP, Tanzania. 2002