When a cat eats rat poison, it usually takes half a day to a day for the attack to occur. The specific attack time depends on the amount of ingestion and the type and toxicity of the rat poison. If a cat ingests a very small dose of rat poison, the cat may not show symptoms of poisoning. ​​​​​​

Symptoms of cats poisoned by rat poison include vomiting, foaming at the mouth, convulsions, difficulty breathing, depression, coughing, coma, rapid breathing, blood in the feces, and even suffocation.

If a cat is found to be poisoned by rat poison, the owner should immediately pour soapy water into the cat to induce vomiting and send it to the hospital for rescue.