Cheng Da
成大
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Cheng Da (成大), studbook #824, is a female giant panda born August 15, 2011 at Chengdu Base, twin sister of Cheng Xiao (#...
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YIN
Panda archive
Yin Ke (#744)
银柯
alive male
Born July 16, 2009
Yin Ke (银柯, studbook #744), nicknamed "Hamster Face," is a male giant panda born July 16, 2009 at the Bifengxia Base. An Asian Games Panda in 2010, he lived at Linyi Zoo from 2019 to 2025, where he sparked a national controversy about panda care standards — the zoo published detailed daily records to prove he was healthy. He returned to CCRCGP in July 2025.
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This page brings together the core facts, timeline, family graph, media, place journey, and related reading for Yin Ke.
Profile snapshot
Quick facts
Birth date
July 16, 2009
Birth place
China Conservation and Research Center for the Giant Panda
Current location
China Conservation and Research Center for the Giant Panda
Status
Alive
Studbook
#744Archive activity
1 update · 0 media
Narrative
Life story
Start with a concise summary, then continue into the full narrative record for Yin Ke.
Short version
Yin Ke (银柯, studbook #744), nicknamed "Hamster Face," is a male giant panda born July 16, 2009 at the Bifengxia Base. An Asian Games Panda in 2010, he lived at Linyi Zoo from 2019 to 2025, where he sparked a national controversy about panda care standards — the zoo published detailed daily records to prove he was healthy. He returned to CCRCGP in July 2025.
Basic Profile
Yin Ke (Chinese: 银柯, nicknamed Hamster Face/仓鼠脸), studbook number 744, is a male giant panda born on July 16, 2009 at the China Conservation and Research Center for Giant Pandas (CCRCGP) Bifengxia Base. His mother is Xi Mei (喜妹).
He was adopted by Shenzhen Panlan Technology Co. and renamed Lan Lan (蓝蓝).
Life Journey
Asian Games Panda (2010)
On October 27, 2010, Yin Ke was one of six pandas flown to Guangzhou on the “Asian Games” charter flight, joining the 12-panda Asian Games Panda Group at Chimelong Safari World.
Linyi Years and the Feeding Controversy (2019–2025)
On April 24, 2019, Yin Ke returned to Sichuan for breeding. A month later, on May 29, he was sent to Linyi Zoo in Shandong.
In March 2023, visitors posted videos of Yin Ke appearing thin and exhibiting begging behavior, sparking a wave of online concern. The zoo responded with an extraordinary level of transparency, publishing detailed daily care records:
- Bamboo: 40–50 kg daily, from both local and air-shipped sources
- Feedings: 4 times daily, with bamboo split open to protect teeth
- Weight: 113–116 kg (within normal range)
- Veterinary: Monthly weigh-ins, 8+ disinfection cycles monthly, annual CCRCGP inspections
- Enclosure: 196 m² indoor + 450 m² outdoor, with temperature/humidity monitoring
Experts from CCRCGP determined that Yin Ke’s behaviors — circling, rolling, pacing — were normal estrus (mating season) behaviors, not stereotypic distress. Despite the official response, the incident highlighted the intense public scrutiny faced by panda exhibition facilities.
Return (2025)
On July 25, 2025, Yin Ke returned to the China Conservation and Research Center.
Evidence
Life timeline
Key updates and milestone events tied to Yin Ke.
Knowledge graph
Family and network
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Mother Half-siblings (grouped)
Yin Ke has
4 half-siblings.
The majority share the same mother, Cheng Ji .
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Why these profiles appear here
1
Cheng Da
Same mother (SB 521)
2
Cheng Ji
Mother: Cheng Ji (SB 521)
3
Ji Li
Same mother (SB 521)
4
Ni Ni
Same mother (SB 521)
Gallery
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Connected archive
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Place journey
Current location
China Conservation and Research Center for the Giant Panda
Dujiangyan, China
Yin Ke is currently linked to China Conservation and Research Center for the Giant Panda.
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Sources and references
Information on this page is compiled from conservation institutions, official panda records, media archives, and the wider PandaCommon research workflow.
Primary source types
- Conservation institution records
- Official panda databases
- Research publications and archive reporting
External links
No external reference links are attached yet.
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