A sudden convulsion in a cat may be caused by an epileptic seizure. Epilepsy is caused by abnormalities in the nervous system. If convulsions occur, you need to seek medical attention promptly.

In addition, convulsions may also be caused by congenital and acquired brain damage, such as encephalitis, hydrocephalus, Brain tumors, meningitis, skull injuries, etc. Or secondary convulsions caused by poisoning, such as food poisoning, drug poisoning, carbon monoxide poisoning, etc.