The panda was put under deep anaesthesia to take CT scans and the team decided to "let Tuan Tuan continue to sleep" after the results indicated his condition was "irreversible."
China sent the animals as a gift to Qatar to mark the World Cup that starts on November 20.
An An, who was battling high blood pressure, was gifted to Hong Kong by China in 1999 and lived to the age of 35 – the equivalent of 105 years in human age.
When pandas are too comfortable in their habitat, their gene pool variation declines. Habitats broken up to an extent may urge them to seek food, shelter and mates elsewhere, contributing to greater gene variation.
The cub was born at a Kuala Lumpur zoo to Liang Liang who has been on loan to Zoo Negara Malaysia since 2014 along with male panda Xing Xing.
Fans of the panda were able to watch the labor live through a 'panda cam' feature accessible on the zoo's website 24 hours a day.
According to Everland amusement park, the panda cub was confirmed to be a female measuring 16.5 cm and weighing 197 grams and that both baby and mother pandas appear healthy.
The two cuddly cubs were the first pandas to be born in a German zoo, and have been nicknamed "Pit" and "Paule" by their carers.
Four-year-old giant panda Bei Bei, born and raised in Washington's National Zoo, will soon return to China to help with the country's panda repopulation efforts.
Researchers have built a database with over 120,000 images and 10,000 video clips of giant pandas that would allow them to correctly identify individual animals.
First-time-mom, Huan Huan, gave birth to twins, the first ever to be born in France. While the second baby was strong and healthy the firstborn was much weaker and died after barely two hours.
The man escaped without injury after wrestling the animal for over five minutes.
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