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Is Onion toxic to cats?
Toxic
Aliases / Scientific Name
Allium cepa, Chives, Leeks
Summary
Contains N-propyl disulfide. Causes hemolytic anemia and blood cell damage.
Symptoms
- Vomiting
- Weakness
- Pale gums
- Breathlessness
Action
Seek veterinary attention immediately.
Vet ReviewedLast Updated: Dec 2025
Data source: ASPCA
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