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If your cat ate red tropea onion — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Red Tropea Onion is toxic to cats (ASPCA).

Pet emergency

My cat ate Red Tropea Onion — what to do

Step by step

  1. Take red tropea onion away and remove any plant material from your cat's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My cat ate red tropea onion — FAQ

Is red tropea onion poisonous to cats?

Yes — the ASPCA lists Red Tropea Onion (Allium cepa 'Tropea') as toxic to cats. The ASPCA classifies onion (Allium) as toxic to cats and dogs. Thiosulphates and disulphides in all parts cause oxidative damage to red blood cells and haemolytic anaemia; signs include vomiting, weakness, pale gums and red-tinged urine. Cats are particularly vulnerable. Keep bulbs and trimmings out of reach.

How serious is it if my cat ate red tropea onion?

Red Tropea Onion is toxic to cats and reactions can be significant, so treat any ingestion as urgent. Call your vet or poison control on (888) 426-4435 straight away rather than waiting to see if symptoms develop.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. The ASPCA classifies onion (Allium) as toxic to cats and dogs. Thiosulphates and disulphides in all parts cause oxidative damage to red blood cells and haemolytic anaemia; signs include vomiting, weakness, pale gums and red-tinged urine. Cats are particularly vulnerable. Keep bulbs and trimmings out of reach. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my cat vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep red tropea onion well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.

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