Description:Five-month-old Xiao Liwu makes his public debut at San Diego Zoo. Not always steady on his feet, the cub is getting used to his new habitat. Only 1,600 giant pandas are believed to exist in the wild and the zoo is working with China on panda conservation programs. And perhaps lesson number one for Xiao Liwu is: don't bother your mother when she's eating.(0:42)