TOKYO - Born on June 12, 2017 to mother Shin Shin and father Ri Ri through natural mating at the Ueno Zoological Gardens, giant panda cub Xiang Xiang weighed a mere 147 grams at birth. She had grown to 61.6 kilograms as of last Wednesday, around half her mother's weight, and now consumes an adult panda diet consisting of bamboo and bamboo grass, the Tokyo zoo said in updates released ahead of her second birthday this week.