CATDOLL : How long can a cat live after eating onions?

This depends on the situation. For cats with mild cases, they can usually recover in one week. If it is more serious, they will usually die within one week. This is mainly because onions contain n-propyl disulfide, which can destroy the red blood cells of cats, which may cause anemia, kidney damage, or even failure in cats. In severe cases, it may be fatal.

Generally speaking, once cats are poisoned by eating onions, they will show symptoms such as lethargy, loss of appetite, foaming at the mouth, pale or cyanotic mucous membranes, and may even go into shock or die. Therefore, if you find that your cat has such symptoms, it is best to take it to the veterinary hospital as soon as possible.