The zoo's last giant panda was Ming Ming. She arrived in 1991 on a breeding loan from China. After unsuccessful breeding attempts with Berlin's Zoo giant panda Bao Bao it had been decided to return Ming Ming to China, leaving the London Zoo without a giant panda since the end of October 1994. Zoo staff later suggested that Chinese zookeepers knew that she was infertile and lent her in order to hide how much more advanced Western husbandry techniques were compared to theirs.