Two-week-old Sumatran tiger cubs (panthera tigris sumatrae) Arla (L) and Olga are carried by their keepers at Taman Safari Park in Cisarua, Bogor, in West Java on June 4, 2004. The smallest subspecies, Sumatran tigers are now the focus of environmentalists' attention as the animal is critically endangered with a population of about 400. REUTERS/Supri SUPRI/SH