Siberian tigers cool themselves off in a pond amid summer heat at a zoo in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2016. (Xinhua/Wang Jianwei)
Siberian tigers cool themselves off in a pond amid summer heat at a zoo in Harbin, capital of northeast China's Heilongjiang Province, Aug. 4, 2016. (Xinhua/Wang Jianwei)