My terrier mix that just passed away in January had a form of epilepsy and had seizures all the time. Hers were mostly pretty severe but weren't anything like what you described...but then again seizures can look different.
I'd try giving your pup nutrical...it could be hypoglycemia which can be deadly for these little guys if not attended to. I had to treat Topher for hypoglycemia once when we first got him and the vet recommended karo syrup or corn syrup (one part with 10 parts water) as it was late at night and I didn't have access to nutrical. That worked fine for him. There are people on here who know much more about this than I do, so perhaps they know what's going on and can make suggestions.
I'd highly recommend going to a vet, though. This doesn't sound right and knowing how quickly things can go downhill with these little guys, I'd definitely want to know what's going on.
__________________  VAL, TOPHER AND SOPHIE |