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Why is my dog vomiting after eating, shivering, and lethargic?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 1 year and 8 months old | 10 lbs

Hi I was wondering what I could do to help my dog he has been vomiting after eating and has had on and off shivers I am not sure if it is a cold or upset stomach? He has also not been as energetic as he usually is? He is about 10 pounds and is a mix of half chihuahua half Maltese.

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1 Answer

Most Helpful Answer

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Answered By Lauren Kennedy, DVM

Veterinarian

Published on September 29th, 2017

Vomiting is a very vague sign and could indicate several different things going on. Some of the more common causes of vomiting include intestinal parasites, gastritis (inflammation of the stomach wall), pancreatitis, dietary indiscretion, or a foreign body/blockage. If Leo has been sick for more than 2 days I would recommend taking him to the vet. He may be dehydrated and need fluids as well as some antinausea medication to help stop the vomiting. Your vet may also want to run some lab work and take x-rays as well. In the meantime, try withholding food (water is ok) for 12-24 hours to see if this helps settle the stomach. You may also want to try and feed him something easily digestible like plain boiled chicken and rice and see if he can keep it down. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck!

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