In pics: Sumatran orangutans in Aceh province, Indonesia

Photo taken on Dec. 22, 2017 shows a Sumatran orangutan at Jantho National Park forest in Aceh province, Indonesia. Sumatran orangutans are listed as critically endangered by the International Union for the Conservation of Nature with fewer than 6,500 estimated to be left in the wild. (Xinhua/Junaidi)