Cats cannot have onions in any form. Onions are toxic to cats and can cause serious health problems, including hemolytic anemia, which is the destruction of red blood cells. This leads to reduced oxygen delivery in the body and can result in severe complications or even be life-threatening. The toxic compounds in onions, such as n-propyl disulfide and thiosulfates, damage the red blood cells of cats because cats lack the necessary enzymes to process these substances. Onions are harmful whether raw, cooked, powdered, or dried. Even small amounts can cause symptoms such as vomiting, lethargy, pale gums, dark urine, rapid breathing, and loss of appetite. Immediate veterinary attention is necessary if a cat consumes any onion-containing foods or onion itself. In summary:
- No form of onion is safe for cats (raw, cooked, powdered, dried).
- Toxic effects can occur from very small quantities.
- Onion toxicity damages red blood cells causing anemia.
- Symptoms include vomiting, weakness, pale gums, and more.
- Veterinary care should be sought immediately if ingestion occurs.
Cats should never be given onions or foods containing onions to ensure their safety.