My miniature poodle starting having seizures a few years before she died (no relation to the seizures.....she was 14 and had lived a long happy life.) The first one occurred in the middle of the night as she was sleeping on my daughter's bed. We had remembered some rough playing that she had been doing with my standard poodle a few days before. They were playing tug of war with a rubber ring toy and were shaking their heads from side to side as they played. Ashley (the one who developed the seizures) tossed her head smack into the wall with a loud thud and seemed a little disoriented for a few seconds afterwards. We mentioned this to the vet who said it could be related but didn't have to be, as poodles were a breed where this is seen. Anyway, there is a happy ending to the story. The vet put her on Phenobarbitol, one tablet twice a day, and she never had another seizure. Periodically we had to go in for blood tests to make sure that the Phenobarb levels in her blood were correct. I would suggest a visit to your vet and see what he says. Good luck!