Children feed a giraffe at Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium, May 25, 2015. (Photo by Francois Lenoir/Reuters)
Children play in front of a brick factory on the outskirts of the northern Myanmar city of Mandalay on December 14, 2015. (Photo by Phyo Hein Kyaw/AFP Photo)
A man dressed as zombie takes part in a zombie race to raise funds for children with cancer at the child Hospital Manuel de Jesus Rivera in Managua October 19, 2014. (Photo by Oswaldo Rivas/Reuters)
School children take photographs as Queen Elizabeth II arrives in Valentine's Park Redbridge as part of her Diamond Jubilee tour of the UK on March 29, 2012 in London, England. (Photo by Chris Jackson/Getty Images)
Cathryn Shrimpton, 4, prepares to play the Angle Gabriel during a traditional Christmas Nativity on December 18, 2011, at St Mary's Church, Myton Village, England. In schools and churches around the country children busy preparing and performing in the telling of the traditional nativity story. (Photo by Bethany Clarke/Getty Images)