Pandas eat bamboo. Baby pandas are as small as a stick of butter! Really, really young pandas are pink and black. Then, as they grow older they become black and white. A giant panda cub weighs only around 150 grams at birth. You might think panda are just lazy, but when pandas eat bamboo they stop bamboo from taking over the forest. So, pandas save the forsts. Pandas are omnivores. Pandas mostly eat bamboo. But sometimes eat grasses, some insects, and fruit. But they're mostaly none to eat bamboo.