Aww, I am glad they ran bloodwork as many different illnesses can cause seizures. Do write down when he has one and how long it lasts, as that will help them know if anti-seizures medicine will be helpful or not, or if it is necessary. Some dogs can take a low- dose med that will eliminate or cut down on seizures entirely. It is tricky, and varies from dog to dog. All you can do is see if it happens a particular time of day, or after certain activities, and keep him from stairs or other dangerous places during that time. You and Bob will be in our prayers.