The sudden death of a cat almost a week after sterilization may be due to the damage caused by anesthesia to the liver and kidneys, the death caused by the lack of timely anti-inflammation after surgery, etc. It may also be the death caused by the cat being infected with a virus or poisoned by accidental ingestion. It is recommended that when sterilizing a cat, you should choose a regular and reliable hospital and doctor, and give the cat a physical examination before the operation to confirm whether the cat is allergic to anesthetics and whether the body is suitable for the operation. Special attention should be paid to postoperative care to avoid complications. Infectious conditions.