For about the last 24 hours, Captain, our boxer will, every now and then shake his head back and forth , just kind of rocks it side to side for a short while each time it happens. His eyes look fine, but you can tell he can't control it. We are worried about it. My husband called the vet who told him that his blood sugar might be out of whack, and so he is going in tomorrow. He advised us to feed him something sweet when it happens, and I don't know whether it is a coincidence, but it has helped. Has anyone ever seen this in their dog? I hope nothing is wrong with him, just when we have grown so attached to him. I know this is a topic for health and genetics, but I wanted maximum input, so could you leave it here for a day, moderators? Thanks!