Walker the polar bear on his third birthday at the Highland Wildlife Park on December 7, 2011 in Kingussie, Scotland. (Photo by Jeff J. Mitchell/Getty Images)

Corporals Verica Zlatevska (L) and Dragana Kitanovska (R) attend an honour guard training session at an army barracks in Skopje March 4, 2015. Macedonia's honour army battalion, the ceremonial uniformed guard that receives every foreign president, dignitaries and delegations, but also sees off and welcomes the head of state every time he leaves the country, has a different glow. For the first time in the history of Macedonia's army, the honour guard has two women in its ranks. There has not been an event in which one of them is not in the first row. Zlatevska joined the army in 2003, Kitanovska in 2006. Picture taken March 4, 2015. REUTERS/Ognen Teofilovski (MACEDONIA - Tags: MILITARY SOCIETY)