The millions of acres of virgin forest in eastern Russia are home to an extraordinary variety of wildlife, including about 350 endangered Amur tigers, such as this adult yawning in a Siberian field.

• 俄罗斯东部数百万英亩的原始森林是各种野生动物的栖息地，其中包括350只濒临灭绝的阿穆尔虎（西伯利亚虎/东北虎）。上图这只正在西伯利亚荒原上打哈欠的成年虎就是阿穆尔虎。