Green onions (scallions) — Food safety facts
Do not feed · Dogs · full breakdown on the linked food page
Toxic, same family as onion and garlic. Damages red blood cells and causes anemia that can appear days later.
Short answer
No — green onions belong to the same family as onion and garlic and are toxic to dogs and cats. They damage red blood cells and can cause anemia, but signs like weakness and pale gums often only appear 2–5 days later. Any amount, fresh or cooked, should be reported to your vet.
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