A dog with a concerned expression looking at scallions, indicating it's toxic for dogs.

Can Dogs Eat Scallions?

No, dogs should definitely not eat scallions. Scallions, also known as green onions, are toxic to dogs and can lead to severe health problems. Even small amounts can cause damage to a dog's red blood cells, leading to a condition known as hemolytic anemia. It's best to keep scallions and any food containing them far away from your furry friend.

A photo of Stefan Stumpfl, the co-author of this article.

By Stefan Stumpfl, in collaboration with Dr. Ali Raza.

Updated on Jun 24, 2024

Did You Know?

Even a small amount of scallions can cause hemolytic anemia in dogs, leading to the destruction of red blood cells.




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Allergic Risk


Why Are Scallions Bad for Dogs?

Scallions contain thiosulfate, a compound that is harmful to dogs. When consumed, thiosulfate causes oxidative damage to the red blood cells. This type of cellular damage can severely compromise oxygen transport in your dog's body, leading to symptoms like lethargy, weakness, pale gums, and potentially life-threatening situations.

How Many Scallions Can Dogs Eat?

Zero. Nada. Zilch. Dogs should not consume any amount of scallions. Even a small ingestion can lead to serious health concerns, so it's best to eliminate any risk by avoiding scallions entirely. Always double-check ingredients in food you might share with your dog.

Similar Toxic Products

Scallions are part of the allium family, which includes several other foods dangerous to dogs.

  • Onions: Raw, cooked, or powdered can cause significant harm.
  • Garlic: Even more potent than onions, garlic can be severely toxic.
  • Chives: Similar to scallions, these are equally harmful.
  • Leeks: Another member of the allium family that poses a serious risk.

Be cautious of processed foods like soups, stews, and casseroles that may have these ingredients hidden inside.

What to Do If Your Dog Eats Scallions?

If your dog has ingested scallions, don’t panic, but act fast. First, remove any remaining scallions to prevent further consumption. Next, contact your vet immediately. Avoid inducing vomiting or administering any home remedies without professional guidance. Quick communication with your vet can be crucial.

Signs and Symptoms of Scallion Poisoning in Dogs

Watch out for the following signs of scallion poisoning:

  • Lethargy: Your dog might seem unusually tired or inactive.
  • Weakness: Difficulty standing or walking.
  • Pale Gums: Check under the lips for paleness.
  • Vomiting and Diarrhea: Gastrointestinal distress.
  • Rapid Heart Rate: Elevated heartbeat compared to normal.

How Long After Eating Scallions Will a Dog Get Sick?

Symptoms may develop within a few hours to several days after ingestion. It's vital to keep a close eye on your pet for any signs of distress during this window.

When to Contact Your Vet for Advice?

If your dog shows any symptoms listed above or you suspect they've eaten scallions, contact your vet as soon as possible. Better safe than sorry!

How to Treat Scallion Poisoning in Dogs?

Upon reaching your veterinarian, your dog may undergo induced vomiting or receive activated charcoal to prevent further absorption of toxins. Treatment might also include intravenous fluids and blood transfusions, depending on the severity. Recovery time varies but could range from a few days to weeks, depending on the initial damage.

Treatment costs can add up quickly. From emergency visits to follow-up treatments, expenses can climb into the thousands. Having pet insurance can relieve much of the financial burden, ensuring your pet gets the best possible care without the stress of unexpected costs.

What Are Healthy Alternatives?

Here are some dog-friendly veggies that can safely be enjoyed:

  • Carrots: Loaded with vitamins and good for teeth.
  • Green Beans: Low in calories, high in fiber.
  • Pumpkin: Great for digestive health.
  • Broccoli: Nutrient-dense, but serve in moderation to avoid digestive upset.


To sum it up, scallions are a big no-no for dogs. The potential for severe health repercussions far outweighs any benefit. Always consult with your vet for any concerns about your dog's diet. Remember, a well-informed dog owner is a dog’s best friend!