Photo released by the World Wildlife Fund (WWF) on Dec. 19, 2016 shows a new species of snake in Laos. A rainbow-headed snake, a dragon-like lizard, a newt and a tiny frog are just four of the 163 new species discovered in the Greater Mekong region last year, the WWF said in a statement Monday. (Photo: Xinhua/Alexandre Teynie at WWF)
