Eleven-year-old female giant panda Shin Shin, unfazed by the attention from visitors, munches on bamboo at Tokyo's Ueno Zoo yesterday. Shin Shin has been showing signs of pregnancy since last week after mating with male Ri Ri in February, according to zoo officials. Shin Shin had a baby in 2012 but the cub died from pneumonia six days later. It could give birth as early as next month, local media reported, although zookeepers still do not know if Shin Shin's current condition is a phantom pregnancy.