Binki never chews anything except the cardboard and items we give her. We had to leave her alone for two nights and one day -- we returned home to find that she had totally chewed through the carpet, through the protective loom, and Through the electrical wires t our reclining couch. (We had unplugged it before we left - so no damage to her. Just wondering what would have caused her to act so out of character. We have left her alone for a day and night before, with no issues. (We leave her when its a short period as we dont want to subject her to a 4 hour drive each way.) If its more than a day, a neighbour comes in to keep her company.