If there is only a small amount of leeks, the problem should not be serious. It is best to observe the cat for at least one to two days to see if there are any abnormal symptoms, such as poor energy, diarrhea, soft stools, blood in the urine, etc. If there is a similar situation, it is recommended to take the cat to the doctor promptly. If the cat has eaten too many leeks, it is recommended to send the cat to a pet hospital for treatment immediately. Because ingesting a large amount of leeks will oxidize the red blood cells in the cat's blood and make the red blood cells brittle, which will have a serious impact on the cat's body. In severe cases, it can cause symptoms such as anemia, diarrhea, hematuria, vomiting, and even death.

Chives are poisonous to cats and dogs because they contain disulfide, which will destroy red blood cells in the body after being eaten by cats, causing hemolytic anemia in cats and causing them to excrete brown-red urine. Never allow cats to eat by mistake, including cooked leeks.

In addition to leeks, cats should not eat onions (green onions, onions, leeks, shallots, etc.). Alliums contain allyl disulfide compounds, which can destroy red blood cells and cause "onion poisoning" anemia, which is harmful to cats. It is said to be very dangerous and can lead to death in severe cases.