Are Green onions Toxic to Pets?
Yes — green onions are toxic to cats. Yes — green onions are toxic to dogs.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
- Scientific name
- Allium fistulosum
- Toxic compound
- N-propyl disulfide and other sulfur compounds
- Toxic parts
- All parts, raw or cooked
- Also known as
- scallions, spring onions
Symptoms
Cats (toxic)
- Vomiting
- Diarrhea
- Weakness and lethargy
- Pale gums
- Fast breathing or heart rate
- Red or brown urine (days later)
Dogs (toxic)
- Vomiting
- Diarrhea
- Weakness and lethargy
- Pale gums
- Fast breathing or heart rate
- Red or brown urine (days later)
What to do
If your cat ate green onions
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your cat ate.
- Note roughly how much was eaten and when.
If your dog ate green onions
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your dog ate.
- Note roughly how much was eaten and when.
Good to know
Green onions are in the same family as onions and garlic and can damage red blood cells. Cats are especially sensitive.
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Frequently asked questions
Are green onions toxic to cats?
Yes — green onions are toxic to cats. Common signs include vomiting, diarrhea, weakness and lethargy.
Are green onions toxic to dogs?
Yes — green onions are toxic to dogs. Common signs include vomiting, diarrhea, weakness and lethargy.
Which parts of green onions are toxic?
All parts, raw or cooked.
What makes green onions toxic?
N-propyl disulfide and other sulfur compounds.
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