“I have seen batches of banknotes worth more than $2.6 million, but beyond all doubt, gold bars look much more attractive!”. – Shamil Zhumatov. Photo: Cooling-down gold ingot. March 14, 2013; Tien Shan mountains, Kyrgyzstan. (Photo by Shamil Zhumatov/Reuters)

A dog rides a wave while competing during the 5th Annual Surf Dog competition at Huntington Beach, California, on September 29, 2013. (Photo by Frederic J. Brown/AFP Photo)

Bendy bombshell Zlata, 27, can use a computer while doing a handstand, deliver a presentation with her head tucked between her legs and bend over backwards to create a table. The stunning German, real name Julia Gunthel, shows her flexibility by creating a different theme for her head-turning calendars each year. (Photo by Zlata Calendar 2013/Caters News Agency)

These zoo animals take on an altogether more sinister look after posing for a set of moody black and white portraits. Alex Teuscher has brought out the dark side in a range of exotic creatures with his artistic project which took two years to complete. Photo: White tiger. (Photo by Alex Teuscher/BNPS)

The brave boy, called Belal and in his early teens, held the young fawn in one hand above his head as he plunged through the surging river to save it. Onlookers watched as the boy waded through the raging river to get to the other side safely. (Photo by Hasib Wahab/Caters News)

Winners celebrate after the annual Lelo match in the village of Shukhuti, Georgia, May 1, 2016. The villagers of Zemo (upper) Shukhuti and Kvemo (lower) Shukhuti have played the game every Easter Sunday for generations, with each side trying to carry the 16-kilogram ball to their end of the neighbouring villages. (Photo by David Mdzinarishvili/Reuters)

Kent Josephso organizes his 8mm tracer rounds during the Big Sandy Shoot in Mohave County, Arizona March 23, 2013. The Big Sandy Shoot is the largest organized machine gun shoot in the United States attended by shooters from around the country. Vintage and replica style machine guns and cannons are some of the weapons displayed during the event. Picture taken March 22, 2013. (Photo by Joshua Lott/Reuters)

A David Cameron look-alike poses with a polar bear model outside the Houses of Parliament as part of a Greenpeace protest on May 13, 2011 in London, England. The environmental charity Greenpeace arranged the protest to highlight the first anniversary of David Cameron’s speech when he pledged to make his new government the greenest ever. In April 2006 Mr Cameron traveled by huskie-drawn sledge when he visited the island of Svalbard in Norway to witness the effects of climate change. (Photo by Oli Scarff/Getty Images)