My 1 old male yorkie has started chewing up everything. He went through this stage when we was teething but it stopped for a while. But now it is back with a vengance. Today we chewed the cord to the Christmas tree lights in half, got in the bathroom trash and chewed up a piece of cardboard. He has also chewed his toys to sheds. He rips the rubber toys apart, rips the stuffing out of his stuffed toys. What is going on??
