My daughter has an Olde English Bulldogge (Samie) who is approx. 2-yrs. old. and the head shakes started about 3-4 months ago and happened about once or twice/month. Recently however, the frequency has increased and within the last 3-days alone he is having at least 1-2/day (the dog has had no surgery). From everything I’m reading, there is no harm to the dog and the Vets have no clue what it is or what causes it, so there’s no sense in taking him to the Vet and wasting a bunch of money. I guess my question that I haven’t been able to find answers to is will the frequency get worse over time, does it happen mostly during sleep, during a specific ‘season’, can ear infections cause this? Any feedback from BREEDERS would be especially helpful. I'm suprised with all of the Bulldog owners out there experiencing this, that the Veterinarians haven't checked into this. Any feedback would be greatly appreciated.