The world's oldest giant panda in captivity, Jia Jia, died on Sunday at her home in a Hong Kong theme park.
Ocean Park said a vet put the 38-year-old to sleep because her health was deteriorating to prevent further suffering and for ethical reasons.
Guinness World Records recognized Jia Jia as the oldest giant panda to live in captivity.
The average lifespan for a panda in the wild is 18 to 20 years, while in captivity it is 30 years, according to Guinness.
Born in the wild, Jia Jia was taken to live at a breeding center in China's Sichuan province in 1980, when she was around two.
She and another panda were given to Hong Kong as a gift from Beijing in 1999, two years after China took control of the city from Britain.