ROKAN HULU/PADANG/CENTRAL ACEH, Indonesia — In separate incidents in early March, officials across three Indonesian provinces rescued a critically endangered Sumatran tiger with its leg amputated, arrested six people for butchering another of the big cats, and detained five suspects in rural Aceh allegedly selling tiger body parts. The spate of arrests began on March 2 in the highlands of Sumatra’s Riau province, after conservation agency offici…