Anup Shah / Western chimpanzee (Pan troglodytes verus) infant male 'Flanle' aged 3 years playing with his grandmother 'Fana' aged 54 years, Bossou Forest, Mont Nimba, Guinea. January 2011.

Fiona Rogers / Western chimpazee (Pan troglodytes verus) infant male 'Flanle' aged 3 years carried on the back of his grandmother 'Fana' aged 54 years, Bossou Forest, Mont Nimba, Guinea. January 2011.

Loic Poidevin / Family outside their home on the Grand Casso Pass, Ethiopian highlands, Rift Valley, Ethiopia, February 2009

Bryan and Cherry Alexander / Nyaka, an elderly Nenets woman, comforts her baby grandaughter in a cradle inside their reindeer skin tent. Tambey tundra, Yamal Peninsula, Western Siberia, Russia. March 2011

Bryan and Cherry Alexander / Nyaka, an elderly Nenets woman, using reindeer sinew to sew traditional clothing inside her family's reindeer skin tent. Tambey tundra, Yamal Peninsula, Western Siberia, Russia. March 2011

Bryan and Cherry Alexander / Nyaka, an elderly Nenets woman, rocks her grandaughter in a cradle inside their reindeer skin tent. Tambey tundra, Yamal Peninsula, Western Siberia, Russia. March 2011

Bryan and Cherry Alexander / Girl and grandmother milking Reindeer / Caribou (Rangifer tarandus) at herders' camp. Todzhu, Tuva, Siberia, Russia, 1998.

Lisa Hoffner / "Titienda" shop - owner with grandson tending their small grocery store in Los Limites, Colombia. Advertising the presence of the cotton-top tamarin in their forests helps educate the community and is...

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

Jane Burton / Sable Border Collie bitch grandmother suckling two grandchildren

Martin Dohrn / Kuna indian grandmother in boat with child, San Blas islands, Panama