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

Anup Shah / Western chimpanzee (Pan troglodytes verus) female 'Fana' aged 54 years protecting her grandson 'Flanle' aged 3 years from an aggressive female 'Yo' aged 49 years who is angry at a juvenile female 'J...

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

Fiona Rogers / Western chimpazee (Pan troglodytes verus) female 'Fana' aged 54 years showing her infant grandson 'Flanle' aged 3 years how to crack open palm oil nuts, Bossou Forest, Mont Nimba, Guinea. January 2011...

David Woodfall / Muslim grandfather with grandson, Ganges delta, Bangladesh, November 2008

David Woodfall / Muslim grandfather with grandson, Ganges delta, Bangladesh, November 2008

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...

Jerry Monkman / A man and his grandson gardening at a community garden in Gloucester, Massachusetts, USA. model released

Paul D Stewart / Portrait of Erasmus Darwin (1731-1802) from a picture by Wright of Derby, reproduced with later hand colouring by his grandson, Charles Darwin in 'Life of Erasmus Darwin' 1879 (Ernst Krause co-author)...