I have an English Labrador that is almost 8 months old and has just started destroying things at night. We can leave him alone for 6 hours during the day and he doesn't touch anything, but every night while we are sleeping he chews up something and it is getting worse each night. It started with a shoe and has progressed to a pot, plant inside the pot, and a picture frame. He is literally eating the stuff, not just tearing it apart. He actually ate the plastic and cardboard from the picture frame. He attempted to eat the glass because there was blonde on it. He also chewed and ate pieces of the porcelain pot. I knew that dogs would chew things, but to eat them? And why now? We have had him since he was 8 weeks old and he has never done this before. Please help!