Two Royal Bengal Tiger cubs are seen with their mother in Bangladesh's National Zoo in Dhaka, Bangladesh, Aug. 17, 2021. (Xinhua)

A Royal Bengal Tiger cub is seen with its mother in Bangladesh's National Zoo in Dhaka, Bangladesh, Aug. 17, 2021. (Xinhua)

Two Royal Bengal Tiger cubs are seen with their mother in Bangladesh's National Zoo in Dhaka, Bangladesh, Aug. 17, 2021. (Xinhua)

Two Royal Bengal Tiger cubs are seen with their mother in Bangladesh's National Zoo in Dhaka, Bangladesh, Aug. 17, 2021. (Xinhua)

来源：Xinhua