Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk. (Photos: Xinhua)

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi rests at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk. (Xinhua/Wang Kai)

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk. (Xinhua/Wang Kai)

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi plays at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi rests at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi eats at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.

Bengal tiger cub Xiao Qi rests at the Jinan Zoo in Jinan, capital of east China's Shandong Province, Sept. 26, 2019. The three-month-old cub is fed by zoo staff since it was born as the tiger mother suffered a lack of breast milk.