Seizures result from abnormal brain activity, often with an unknown cause. They are often characterized by collapse, convulsions, thrashing, salivating, rigidity, and/or inability to control urination and defecation.; severity and duration vary. After or while observing a seizure, it is highly recommended to immediately go to a veterinarian. Seizures should not be ignored.​ It is important to note what you see or even take a video before, during, and after a possible seizure to help your veterinarian best treat your furry friend.