How often do Giant pandas almost exclusively eat bamboo, and they’ve been doing that for about 2 million years. In fact, the animals only digest about 17 percent of the nearly 30 pounds of bamboo they eat throughout the day, according to a study published Tuesday in the American Society for Microbiology’s open-access journal, mBio.
Feces serve not only as a basic food, but also as a supplement to the usual diet of some animals. This process is known as coprophagia, and occurs in various animal species such as young elephants eating the feces of their mothers to gain essential gut flora, or by other animals such as dogs, rabbits, and monkeys.
They poop frequently and don't absorb much water from it so it is heavy. The other day for fun I decided to weigh their poo (zookeepers are weird, what can I say.) In one day each panda eliminated about 1.5 lbs of the brown stuff. That means in just one week they poop the equivalent of their own body weight (10.5 lbs)! N3Cku.