Panda’s SizeAbout the size of an American black bear, giant pandas stand between two and three feet tall at the shoulder (on all four legs), and reach four to six feet long. Males are larger than females, weighing up to 250 pounds in the wild. Females rarely reach 220 pounds.Panda’s Life SpanScientists are not sure how long giant pandas live in the wild, but they are sure it is shorter than lifespans in zoos. Chinese scientists have reported zoo pandas as old as 35.Panda’s DietA wild giant panda’s diet is almost exclusively (99 percent) bamboo. The balance consists of other grasses and occasional small rodents or musk deer fawns. In zoos, giant pandas eat bamboo, sugar cane, rice gruel, a special high-fiber biscuit, carrots, apples, and sweet potatoes.