The signs of cat madness include abnormal behavior, excitement, anxiety, aggressive behavior, abnormal mood, drooling, muscle spasms, etc. As long as you observe carefully, you can detect these abnormalities in cats. Generally, cat madness is divided into four stages, and each stage has abnormal behavior. If a cat is found to have similar behavior, it is best to take the cat to the pet hospital for examination in time to avoid delaying the condition.