Anup Shah / Western chimpanzee (Pan troglodytes verus) juvenile female 'Joya' aged 6 years using rocks as tools to crack open palm oil nuts, Bossou Forest, Mont Nimba, Guinea. December 2010.

Anup Shah / Western chimpanzee (Pan troglodytes verus) young male 'Jeje' aged 13 years using a tool made from a stem for 'Algae Scooping', Bossou Forest, Mont Nimba, Guinea. December 2010.

Ernie Janes / Garden tools silhouetted in potting shed window. September, UK.

David Woodfall / Man cultivating community allotments, part of local authority production of sustainable food, Agenda 21, April 2009. No release available.

Konrad Wothe / Chimpanzee (Pan troglodytes) fishing for ants with stick, Mahale Mountains National Park, Tanzania, East Africa

Nick Turner / Cotswold voluntary wardens replacing a stile, Gloucestershire, UK, June 2008.

Ernie Janes / Silhouette of gardening tools, UK

Paul Hobson / Silhouette of Wood mouse (Apodemus sylvaticus) on shelf in garden shed at night, Sheffield, Yorkshire, UK. British Wildlife Photography Awards (BWPA) competition 2011

Anup Shah / Bonobo (Pan paniscus) adolescent male using a branch to reach food that is beyond his depth, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Anup Shah / Bonobo (Pan paniscus) female 'Lisala' using a branch for support to wade through water, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Anup Shah / Bonobo (Pan paniscus) male using a rock to crack open nuts, tool use, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Mary McDonald / Black striped capuchin (Sapajus libidinosus) using rocks to crack nuts, Piaui, Brazil