what can cause a dog to faint
Dog fainting may be the result of disorders like epilepsy, or of conditions like narcolepsy or cataplexy. There are dozens of diseases and conditions that can cause dog fainting. Some of the most common include: 1  Hepatic encephalopathy, a disturbance in brain function caused by liver disease or deformity of the liver. 2  Hypocalcemia, or low blood calcium levels. 3  Hypoglycemia, or low blood sugar.