Aloha! You're speaking to Dr. Michael Salkin I'm sorry that your question wasn't answered in a timely manner. You've described a complex partial seizure (previously called petit mal) which is defined as focal or asymmetric sensory or motor activity affecting any part of the body and can be associated with autonomic signs (e.g., salivation, vomiting). Your vet would appreciate your videoing an event which would be helpful in clarifying your dog's behavior. When such seizures arise between the ages of 1-5 years, idiopathic (unknown cause) epilepsy is most often diagnosed. Epilepsy (adult-onset) is still a differential diagnosis for your dog. Diagnostics in the form of blood and urine tests are performed in an attempt to identify an extracranial (outside the skull) etiology for seizures. If nothing untoward is found in such testing, an intracranial (inside the skull) etiology such as epilepsy or brain tumor is assumed. MRI would be necessary to investigate an intracranial etiology further. Most of us will tolerate one mild event monthly before considering anticonvulsive medication. His behavior, however, would prompt my prescribing an anticonvulsive drug such as levetiracetam or phenobarbitone. Please respond with further questions or concerns if you wish.