Do pandas really "eat shoots and leaves"?

I love this description: "They spend at least 12 hours each day eating bamboo. Because bamboo is so low in nutrients, pandas eat as much as 84 pounds (38 kilograms) of it each day. Pandas grasp bamboo stalks [including bamboo shoots!] with their five fingers and a special wristbone, then use their teeth to peel off the tough outer layers to reveal the soft inner tissue. Strong jaw bones and cheek muscles help pandas crush and chew the thick stalks with their flattened back teeth. Bamboo leaves are also on the menu, as pandas strip them off the stalks, wad them up, and swallow them."

Source: http://www.sandiegozoo.org/animalbytes/t-giant_panda.html

"Giant pandas have a diet that consists almost completely of bamboo. A giant panda may eat bamboo for 10-12 hours a day. That’s a lot of eating!"

Source: http://www.quora.com/Pandas/Why-do-pandas-eat-bamboo

Eat like a panda. Swim like a whale.