Onions and other plants of the Allium family can cause illness in cats even in small amounts. Signs can be noted at 5 grams per kilogram of body weight. The onion causes damage to the red blood cells leading to anemia. Signs include weakness, vomiting, decreased mucous membrane color, and a change in the urine color.
If your cat ate any other unusual food this could be gastrointestinal upset due to dietary indiscretion.
Have your cat examined by a veterinarian--they will run blood tests to check the red blood cells and other important organs (liver and kidney especially).
If your cat ate any other unusual food this could be gastrointestinal upset due to dietary indiscretion.
Have your cat examined by a veterinarian--they will run blood tests to check the red blood cells and other important organs (liver and kidney especially).