Sad…Tokyo lost a great great treasure today.
As reported earlier, the unnamed cub was the first panda babe in 24 years for Tokyo and many are mourning the loss.
Zookeepers found the baby belly up on his mother's chest and tried to resuscitate him for an hour.
An autopsy revealed that the baby had milk in its lungs, having accidentally inhaled it during breastfeeding from Shin Shin.
Less than half of panda babies survived longer than a week and the survival rate is cut down even more for first time moms.
The zoo will set up a place for flowers and prayer for those mourning the cub.