Zhen Zhen, the newest charismatic mega-vertebrate at the San Diego Zoo, was climbing a downed tree branch in her grotto Friday when she went wobbly and plopped to the ground, 3 feet below.

Not to worry giant panda-philes, it's all part of the maturation process. Plus, if anything had gone seriously amiss, her mother, Bai Yun, was nearby having a bamboo breakfast.

After four months of being visible only on the panda cam on the zoo's website, Zhen Zhen (pronounced jun-jun) is to go on public display today