Cheryl-Samantha Owen / African elephant (Loxodonta africana) baby trying to grab the tail of adult, Amboseli National Park, Kenya.

Arne Hodalic / Nenet herdsman with Reindeer (Rangifer tarandus) during summer migration, Yamal Peninsula, Russia. May.

Eric Baccega / Salt caravans made up of hundreds of Dromedary camels (Camelus dromedarius) and their pullers transporting salt slabs cut from Lake Assale to the Mekele Market, Danakil depression, Afar region, Ethiop...

Ole Jorgen Liodden / Herd of Moose (Alces alces) following in line in each other's tracks, aerial view, Valdres, Norway, February.

Kristel Richard / Wild Mongolian mare and her foal trotting, plains at the foot of Dungurukh Uul mountain, near the border with China and Kazakhstan, Bayan-Olgiy aymag, Mongolia. September.

Steven Kazlowski / Polar bear (Ursus maritimus) sow with two juveniles walk along the ice edge during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska

Marie Read / Canada goose (Branta canadensis) adult swimming leading five goslings, Ithaca, New York, USA.

David Pattyn / Great crested grebe (Podiceps cristatus) close-up of an adult with two young chicks. The Netherlands. June 2014

Christophe Courteau / Light of the Creac'h Lighthouse at night. Ile d'Ouessant / Ushant, Finistere, Brittany, France, September 2011.

Nick Garbutt / Female Capybara (Hydrochoerus hydrochaeris) swimming in line with young after escaping a Jaguar attack (Panthera onca palustris) in a lagoon off the Paraguay River. Taiama Ecological Reserve, Pantanal...

Christophe Courteau / Tourists and guide using snowshoes on an ecotourism trekking holiday, Svalbard, Norway, June, 2012. Model released.

Jussi Murtosaari,Jussi Murtosaari / Common Teal (Anas crecca) female with ducklings, Finland June