A Siberian tiger eats a pheasant in the Heilongjiang Siberian Tiger Park, Northeast China's Heilongjiang province on March 22, 2013. It is thought more than 100 new Siberian tiger cubs cold be born in the park, the world's biggest Siberian tiger breeding base. At present, all Siberian tigers of child-bearing age have completed their mating, according to the park which currently has more than 1,000 Siberian tigers. [Photo/Xinhua]

Two Siberian tigers rest in the Heilongjiang Siberian Tiger Park, Northeast China’s Heilongjiang province on March 22, 2013. [Photo/Xinhua]