When my now deceased lab was a puppy we left him at home alone for longer than usual one time. He ate a chair. True he did not swallow it whole and he was careful to keep the shredded cushions in one pile but when we arrived home we had an ex chair. I guess their is nothing finer to a pup then the wholesome taste of finished wood.
I tell people who have labs. They love to chew and they stay at the puppy stage longer than other dogs so be prepared to scratch your head a lot and say " how the heck did he eat that?"
My lab never chewed anything she wasn't supposed to, until she reached her teenage stage. Then she would pick specific items I was using (not paying attention to her) and chew that up. For example, she would pick the specific video I watched the night before off the video rack and chew it up, same with a deck of cards. Her ability to pick the specific item amazed me.
At the time it wasn't funny but now we laugh about it. My parents have an 18 year old Cocker Spaniel named Kimmie. Kimmie goes nuts over french fries. My Stepfather had recently bought a brand new Ford SHO, fully loaded with leather seats.
A few weeks after they bought the car, they'd stopped at some fast food place and got fries. a few fries must have fallen between the seat and the console. The next day they took Kimmie with them and left her in the car for a few minutes while running into a store. When they came out the drivers side seat had been eaten/ripped out and Kimmie was chowing down on a french fry!!