Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My dog ate a tiny bit of cooked onion. Is it toxic or dangerous?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | neutered | 60 lbs

My 2 yr old Labrador is approx 27kg and has eaten approx a teaspoon of cooked onion. Is that enough to harm him?

2 Answers

Most Helpful Answer

Image profile

Answered By Daniel Fonza, DVM

Veterinarian

Published on October 19th, 2017

Hi there and thank you for using Pet Coach! The amount of onion and the size of Paddy should not cause any clinical symptoms associated with toxicity. You may see GI signs such as vomiting / diarrhea. I would monitor for now and if you notice any signs such as lethargy, inappetance, vomiting blood, etc., I would have a veterinarian examine Paddy and test her blood. I hope this helps! Please let me know if you have any other questions / concerns. I am also available via consultation if needed.

Vote icon

1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Dr. Paula Simons

    Veterinarian

    Published on April 18th, 2022

    Luckily for your pup, the amount of onion ingested is very unlikely to cause any major clinical consequences. For his size, he would need to eat at least two medium sized raw onions to experience toxicity. I would continue to monitor him and make sure he doesn't develop digestive upset from the soup.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Food & Nutrition
What's the best way to feed my hamster when I'm going on a trip?
Planning a trip to Chicago and need to feed your Syrian hamster? A certified vet offers expert advice on feeding options for short and long trips, plus finding trusted pet sitters.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
Can chickens eat bell peppers daily and what about veggie salads?
Can your chickens eat bell peppers and salads? Veterinarian Dr. Elizabeth offers expert advice on safe feeding, frequency, and how fresh veggies boost vibrant yolks.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
My newly adopted pet won't eat hay. What can I do to encourage it?
Adopted a pet not eating hay? Dr. Stafford, a certified vet, offers expert guidance on encouraging hay consumption, including adjusting pellets and trying fresh types.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet is breathing hard, not eating, and lethargic. What's wrong?
Is your rat breathing heavily, won't eat, and has no energy? A Licensed Vet Tech explains potential causes like infection and age, urging a vet visit for diagnosis.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My degu lost teeth after an accident. How can I feed him soft foods?
Your degu had an accident, lost teeth, and can't eat hard food. A Petco Vet Tech offers crucial advice on immediate vet care and how to feed your injured degu.
Updated on December 04, 2025
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored