Gao Gao
Gao Gao was a male giant panda formerly at the San Diego Zoo from 2003 to 2018 and was then returned to China. He was diagnosed with a heart murmur in 2013. His right testicle was removed for health in 2014. He fathered five giant pandas in captivity.
History
Gao Gao was born in the wild in China, around 1990, and was taken to the Fengtongzhai Nature Reserve in 1993 suffering from injuries which resulted in the loss of nearly two thirds of his left ear.On April 12, 1995, Gao Gao was released to the wild in good health, as featured in the Chinese documentary Returning Home. However, his release was brief, as he was too disruptive to the local villages. He was then brought to the Wolong Panda Conservation Center in 2002.
Gao Gao arrived at the San Diego Zoo in January 2003 and replaced Shi Shi as Bai Yun's mate. This has proven to be a very successful pairing — Gao Gao and Bai Yun are the parents of Mei Sheng, Su Lin, Zhen Zhen, Yun Zi, and Xiao Liwu, all conceived via natural mating. He has three grandchildren, among them a male born to Su Lin on July 7, 2011.
On October 30, 2018, Gao Gao left the San Diego Zoo, and returned to China as the end of his 15 year loan agreement was reached.
Journey to the US
On January 14, 2003, Gao Gao departed from Chengdu Shuangliu International Airport and arrived at the San Diego Zoo on the evening of January 15. This journey followed after the return of the panda Shishi to China. Throughout the journey, Gaogao was accompanied by research staff and many panda foods, including bamboo and steamed bread. After arriving at the San Diego Zoo, Gao Gao underwent a 30-day quarantine time to ensure his health and then met the public.In October 2018, Gao Gao finished his stay in the United States and returned to China at the age of 28, which is equivalent to 98 years in human life. To protect his safety, the San Diego Zoo did not disclose the specific departure time and transportation mode. Considering Gao Gao's age and health problems, the zoo “prepared intensely.” Gaogao was trained in advance to be accustomed to staying in a crate and ignoring the noise from the environment. Two staff members accompanied Gaogao throughout the entire trip to provide care and support.
Since returning to China, Gao Gao has lived in the China Conservation and Research Center for Giant Pandas in Dujiangyan, Sichuan, which is also his hometown. As of October 2023, he was still there. The experts at the center conducted a physical examination and designed a personalized plan to ensure Gao Gao’s well-being. Following a month-long quarantine period, Gao Gao met the public in early December 2018.
Health
On May 6, 2014, Gao Gao received a one-hour surgery at the San Diego Zoo to have his right testicle removed due to a tumor. The decision was made after considering Gao Gao was not at the age for breeding and approved by The Ministry of Forestry for the People’s Republic of China, which is the government sector in charge of the conservation of animals in China. He recovered well—eating and sleeping as usual.In June 2016, Gao Gao’s medical examination indicated that he had pulmonic stenosis, which cannot be completely cured. This result represented a progressive condition from three years earlier when he had been initially diagnosed with a heart murmur. The Zoo provided Gao Gao with medication and closely monitored his health.
Mating
On August 19, 2003, Bai Yun, a female giant panda at the San Diego Zoo, gave birth to Meisheng. The DNA test showed that Gao Gao was Meisheng's father. In Chinese, Mei Sheng means "Born in the U.S.A.", and can also be interpreted as "beautiful life". Mei Sheng is Gao Gao and Bai Yun's first child and the first male giant panda born in the United States through natural mating.On April 9, 2005, the San Diego Zoo announced that Gao Gao and Bai Yun mated naturally twice in the past two days, and Bai Yun became pregnant. They are the first pair of giant pandas in the United States to successfully mate naturally this year. Then, on August 2, 2005, their second cub Sulin, which means "a little bit of something very cute" in Chinese, was born.
From 2003 to 2012, Gao Gao and Bai Yun produced five babies by natural mating, a prioritized way other than artificial insemination since the latter needs two steps, during both of which two pandas need to be sedated.
Death
Gao Gao died on 24 November 2025, at approximately 33 years of age, at the China Conservation and Research Center for the Giant Panda in Sichuan, China. In the preceding days, he showed signs of declining health, including reduced appetite, lethargy, and abdominal bloating observed on 22 November; medication provided minor improvement. A CT scan conducted the following day in collaboration with a top-tier hospital disclosed severe complications, including a shrunken right lung with patchy inflammation, blurred margins, pleural effusion, thickened right pleura, and abnormalities in multiple other organs. Treatment temporarily stabilized his condition, enabling intake of liquid food under continuous 24-hour monitoring.Tragically, around 11:40 a.m. on November 24, Gao Gao suffered sudden hindlimb weakness, instability, and respiratory distress. Despite exhaustive emergency efforts, he passed peacefully at 2:30 p.m.