If the dog's convulsions are very low in frequency and irregular in time, it may be caused by dreams, fright, etc. If your dog has a high frequency of convulsions, it may be due to a lack of minerals such as calcium, or a neurological disease.

Dogs can also convulse with epilepsy. The cause of epilepsy is genetic or acquired brain damage. Brain injuries can include brain tumors, concussions, meningitis, parasitic infections, some metabolic diseases, or due to poisoning.