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Can dogs eat scallion / green onion?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
No — avoid
Allium toxicity.
The short answer
No — avoid — dogs should never eat scallion / green onion. allium Long thin onion.
Why it's dangerous
Allium toxicity.
What to do if your dog ate scallion / green onion
- Stay calm and assess how much was eaten and when.
- Call your vet or ASPCA Animal Poison Control at 888-426-4435 (consultation fee may apply).
- Alternatively, Pet Poison Helpline: 855-764-7661.
- Do not induce vomiting unless explicitly instructed by a vet.
- Have product packaging or the food itself ready to describe to the vet.
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Puppy safety
Scallion / Green Onion is even more dangerous for puppies than adult dogs. Their smaller body weight means the same amount delivers a much higher toxic dose per pound. Their developing organs are also less able to process and clear toxins. If your puppy ate any amount of scallion / green onion, contact your vet immediately — don't wait for symptoms.
What to do if your dog ate scallion / green onion
- Don't wait for symptoms. Some toxic effects start hours later but treatment is most effective when given early.
- Call your vet or an animal poison control hotline now:
- ASPCA Poison Control: (888) 426-4435 (fee may apply)
- Pet Poison Helpline: (855) 764-7661
- Have these details ready: your pet's weight, the amount eaten, when it happened, and any symptoms you've noticed.
- Don't induce vomiting unless the vet specifically tells you to. Inducing vomiting at home can cause aspiration in some cases.
- Save the packaging or a sample of what was eaten — this helps the vet identify ingredients.
Safer alternatives to scallion / green onion
Looking for a safe treat? Here are vet-approved alternatives dogs can enjoy instead:
Frequently asked questions
Is scallion / green onion toxic to dogs?
Yes — Allium toxicity.
How much scallion / green onion is too much?
Any amount can be dangerous. Even small ingestions warrant a call to your veterinarian.
Can puppies eat scallion / green onion?
No — and even more dangerous than for adults due to lower body weight. Contact your vet immediately if a puppy eats any amount.
What should I do if my dog ate scallion / green onion?
Call ASPCA Poison Control at (888) 426-4435 or your veterinarian immediately. Don't wait for symptoms.
Frequently asked questions
Can dogs eat scallion / green onion?
No — avoid. Allium toxicity.
What happens if a dog eats scallion / green onion?
Watch for digestive upset, lethargy, or other unusual behavior.
Is scallion / green onion toxic to dogs?
Yes — scallion / green onion is toxic to dogs. Allium toxicity.