I have a 4 to 7 year old n/m Belgian Malinois that I adopted in November of 2009. He is probably closer to 4 years in age than 7. Up to this point he is totally healthy other than he will be needing some dental done at some point. He started what I now think are the idiopathic head tremors Saturday morning at 1:00 am. We had been watching a movie and I went to the bathroom. When I came back he was doing it. My first thought was that he was having a seizure so I grabbed my phone to record it/time it. I called the emergency vet who though it would be ok to wait and see our vet in the morning unless he had another one. At about 1:30 he had another one that lasted 3 1/2 min. I called them back and they said to bring him right in. They of course didn't find anything and sent me home with Valium in case he had grand malls. I took him to my vet Saturday and she didn't think they were seizures due to the fact that he is alert, walking around, etc. So she didn't want to start him on any kind of meds (which now sounds like a really smart move on her part). She thought it might be some kind of a toxin and I was told just to monitor him and keep a log (which I was already doing) of the episodes. Between Saturday morning at 1:00 and Saturday evening at 11:00 he had 7 episodes ranging in time from about 20 second to 6 min. I only saw him have one yesterday that lasted about 3 min. After searching the internet I now think he has the idiopathic head tremors and it helps to know we aren't alone. He had surgery in early November to get neutered but has not have his heat worm meds for a could of months (please don't freak out on me it's a long story). I don't know what his life was like before I got him as he was found as a stray. The only thing his blood test showed was that Amylase was high by 59 points, but our vet said a lot of places aren't testing that anymore and not to worry, and that his Albumin was low by .1 point. Glucose was normal at 99. I am going to continue to record his episodes and keep a log and I am going to try the honey. There is a page for this on Facebook that I joined and if you are on Facebook you may want to join it as well. Here are three videos of Porthos having his head tremors. I'm sorry for the low quality, I know it is hard to see his head shaking, but it is all I have. Good luck to all you other dog lovers who are going through the same thing.
http://www.youtube.com/watch?v=BEwsWTOLAHc
http://www.youtube.com/watch?v=nwOJNNqUmJQ
http://www.youtube.com/watch?v=KMD_wyp6-9Y