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My dog ate used vegetable oil and feels sick. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Female | spayed | 10 months and 30 days old

My dog got on the counter and ate about 2.5 cups of used vegetable oil. Should I be concerned? She obviously doesn’t feel well now. What can I do to help her?

3 Answers

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on August 13th, 2019

There isn't much you can do. do not feed her anything in the next 24 hours, do expect a lot of diarrhea at some point (probably only tomorrow), she might also start vomiting, if she is vomiting more than a couple times- take her to the vet to get an anti vomiting treatment.

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5Pet Parents found this answer helpful

Other Answers

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    Answered By Claudia Fioravanti

    Veterinarian

    Published on September 26th, 2017

    It is obviously quite difficult to digest used vegetable oil and will likely trigger vomiting and diarrhoea. It could also cause pancreatitis because of the high content of fat. I would recommend a check up in order for Petey to get better as soon as possible and avoid events escalating.

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    Answered By Dr. Elizabeth

    Veterinarian

    Published on March 19th, 2019

    Vegetable oil is very fatty and will cause G.I. upset as you unfortunately already know. If it cooked onions or garlic there’s a potential for toxicity. It can also cause pancreatitis because of its high fat content. I recommend to take Cookie to the veterinarian for medications to make him feel better and watch him very closely over the next seven days has pancreatitis could set it at any point. Signs of pancreatitis can vary but are usually vomiting not eating well and feeling lethargic. If these are seen he needs to go back to the veterinarian. You can also change him to a bland diet for the next seven days as this may help his tummy to settle better. Best of luck and please feel free to post any additional questions.

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