Can Dogs Eat Onion?

❌ No — do not feed

NO — onions (and garlic, leek, chives) damage red blood cells in dogs and cats. Cats are more sensitive.

How much can a dog have?

Zero. Toxic in cooked, raw, powder and broth form.

Benefits

Nothing.

Risks & signs of trouble

Pale gums, weakness, dark urine appearing 1–4 days after ingestion.

Which dogs should avoid it?

No pets. Hidden sources: gravy, broth, baby food.

🚨 If your dog has already eaten onion

Don't wait for symptoms. Call your vet or a pet poison helpline immediately with: amount eaten, time eaten, your dog's weight and breed.

Helpful resources: Pet first aid guide · Toxic foods A–Z

Other foods to check

Can dogs eat Chocolate?

NO — chocolate contains theobromine, which is toxic to dogs. Dark/cooking chocolate…

Can dogs eat Grapes?

NO — grapes and raisins can cause acute kidney failure in dogs,…

Can dogs eat Raisins?

NO — raisins are concentrated grapes. Highly toxic and can cause kidney…

Can dogs eat Garlic?

NO — garlic is 5× more toxic than onion. Avoid even "small…
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