CAN DOGS EAT SCALLIONS (GREEN ONIONS)?
Scallions are young onions — fully toxic to dogs. Both the green tops and white bulb contain the same organosulfur compounds that destroy red blood cells.
Can Dogs Eat Scallions (Green Onions)?
Why?
Scallions are immature onions harvested before the bulb develops. Every part — green tops, white base, and bulb — contains n-propyl disulfide and related organosulfur compounds that cause oxidative damage to canine red blood cells (Heinz body hemolytic anemia).
Scallions appear raw in salads, on tacos, in stir-fries, and as garnishes across Asian and Western cuisines. The green tops are often perceived as "mild" or "just herbs," but the toxin concentration is equivalent to other Allium species. Stir-fried scallions retain their toxicity — heat does not neutralize organosulfur compounds.
A medium-sized dog eating the scallions from a shared stir-fry portion can accumulate a significant toxic dose in a single meal.
How much is dangerous?
Same threshold as onions: approximately 0.5% of body weight. A handful of scallions can be toxic for a medium dog.
What are the symptoms?
- weakness
- pale gums
- rapid heart rate
- lethargy
- reduced appetite
- discolored urine
- vomiting in acute cases
What should I do?
Contact your vet immediately. Blood work to assess red blood cell count. Severe anemia requires hospitalization.
Frequently asked questions.
Can dogs eat spring rolls that contain scallions?
No. Spring rolls, dumplings, and other dishes containing scallions are not safe for dogs.
Is the green part of a scallion less toxic than the white part?
No. Both parts contain the same organosulfur toxins. The entire plant is toxic.
Disclaimer: This information is for educational purposes only and does not constitute veterinary advice. Every dog is different. Always consult your veterinarian before making changes to your dog's diet or in the event of a potential poisoning emergency.