Most any breed of dog can have seizures. Again most any thing can cause the start of them and can be heriditary.
I know a lot about epilepsy for I am one. The gran mal is no longer call such. There medical name is Local. There is a variety of types of epilepsy and many types of medications for them.
I would take my dog to a vet who truly knows about neurological conditions before I would worry too much. Depending on the age of the dog has a lot to do with the continuance of seizures. If a puppy or dog less than three years of age and this is the first seizure, the dog may not have another one. Moreover, if the dog suffered some type of head injury while playing and its serverity, the dog may have seizures for the rest of its life.
Again, have the dog checked out by a doctor that has studied in neurological conditions. Pets today are being seen more for what was normally human conditions and diseases. The newer the vet the more they have studied in treating animals as humans.
