After cats eat rat poison, they will experience symptoms such as mental abnormalities, vomiting, diarrhea, foaming at the mouth, bleeding from the mouth and nose, blood in the stool, increased body temperature, and not eating or drinking. Once discovered, it is best to send them to a pet hospital for rescue in time. , to avoid delaying the condition and causing life danger. It is usually best not to place rat poison where cats can access it to avoid poisoning by cats accidentally eating it.