My dog ate a small piece of onion. Is a tiny amount harmful to her?

Hello. If it was just a one time small piece, he will be fine. A dog this size would have to eat a tablespoon or so of cooked onion to even begin to have any issues. He will be fine. Thanks for using Petco Pet Education Center, formerly Petcoach.

The dose of onion in dogs that is toxic is about 0.5 grams per kilogram of body weight. For a 10 pound dog, that would be about 20 grams of onion. There are about 5 grams in each teaspoon, so Marlin would have to eat over 4 tsp of onions in order to be concerned about toxicity. The biggest concern comes with dehydrated onions which are much more concentrated than fresh onions. It sounds like Marlin will be fine, but please contact your veterinarian if you have any concerns. I hope that was helpful! Thanks for using Petco Pet Education Center, formerly Petcoach.

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.

It typically takes ingestion of about 0.5% of your pet's body weight of onion to be at risk of onion related toxicity. This calculates out to be approximately 0.15 lbs, or around 2 ounces. Unless your pet ate anything close to that amount or more, it is not recommended to do decontamination for him. With a piece of [onion](https://www.petcoach.co/canigive/dog/onions) that only weighs a few grams I would not be concerned. Just monitor him for the next couple of days for any GI upset, lethargy, panting or pale gums. And if he gets a hold of any more you can always contact the [Pet Poison Helpline](https://www.petpoisonhelpline.com/). There is a charge associated with this call.

A few pieces of onion ingested by a dog of Mochi's size will likely cause nothing worse than some minor stomach upset, if anything at all. She would need to eat 2 or 3 med/large onions in order to be at risk of serious toxicity. If she develops vomiting or diarrhea but continues to behave normally, you can fast her for 24 hours then feed a bland diet in small, frequent amounts until symptoms resolve. Transition slowly to her regular diet afterwards.

Hi, It is true that garlic and garlic products can produce harmful effects in dogs such as anemia. Although, if this was a small amount and since Nova is a large dog, it would be very strange for her to have symptoms. Monitor her and keep an eye on any signs such as lethargy, pale gums, rapid breathing, weakness, jaundice, and dark colored urine. Garlic toxicity may also cause vomiting and diarrhea. If Nova had these signs, you would want to seek veterinary attention soon. But from the information you've provided I don't think you have much cause for concern. Thanks for the question and you did a great job noticing this! -Dr. Gordon

Hello. It takes a fair amount on onion ( like several tablespoons ), or several cloves of garlic to cause any problems in dogs, especially one Moon's size. I would not be concerned at all about this very small piece. Thanks for contacting Petco Pet Education Center, formerly Petcoach.