Panda in Japan zoo dies during breeding programme
Kou Kou, or Xing Xing in Chinese, died Thursday of cardiac arrest after failing to recover from an anaesthetic at the Oji Zoo in the western port city of Kobe.
Veterinarians had sedated the 14-year-old animal as part of a programme to impregnate his partner Tan Tan, or Shuang Shuang in Chinese, also 14.
The zoo has set up a site for floral tributes and a message board.
Giant pandas, a highly endangered species native to parts of China, are notoriously slow at reproducing in captivity.
The Kobe zoo, after trying in vain to naturally mate the pair from 2003 to 2006, then began trying artificial insemination.
Tan Tan became pregnant in 2007 but the cub was stillborn. She had a live birth the following August, but the cub died three days later.