Giant pandas are loved the world over but nowhere more than in China, where they are considered national treasures. On March 16, we celebrate these distinctive bears, which live mainly in forests in the mountains of western China and subsist almost entirely on a diet of bamboo. These black-and-white giants start off small—a newborn panda is about the size of a stick of butter—but after eating their way through between 26 and 84 pounds of bamboo a day, male adults can weigh in at up to 300 pounds.