Dogs that have seizures can have different types, all are not full blown seizures where the dog is rendered unconscious for a few minutes. There are partial or focal seizures which would show a change in behaviors. Some dogs will pace, whine, bark, hide, become clingy to the owner (or the opposite), lick air or snap at imaginary flies. Different behaviors vary from dog to dog and some are noticeable by the owner, and some are passed off a strange quirks. These behaviors can last from minutes to days in duration. Generally unless seizures are full blown and life threatening nothing is done. I would keep a record of the times and the type of behaviors you are seeing to discuss with your vet. If possible video taping the episode may also be helpful to a vet.