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Why is my puppy throwing up and feeling sick? When to see a vet?

Updated On September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | unneutered | 7 months and 15 days old | 10.2 lbs

My puppy has been licking other dogs private parts and today he threw up a lot. He is feeling a little better but he still doesn’t feel good

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1 Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on October 20th, 2017

Hello, and thanks for using Petco Pet Education Center, formerly Petcoach. The licking of other dogs' private parts is a gross habit, but probably not the cause of the vomiting. Causes of vomiting in a puppy can include dietary intolerance or indiscretion, food allergy, intestinal parasites, GI blockage, gastroenteritis, bacterial or viral infection (including parvo virus if not completely vaccinated), among a few others. If the vomiting lasts longer than 12-24 hours, or if Prince develops other symptoms, such as diarrhea, lethargy, abdominal pain, etc he should see a vet as soon as possible. I would only offer small meals of Prince's normal puppy food, or small pieces of boiled chicken breast in this period. If he isn't interested in food, it may be a sign that he is very nauseous and he should get checked out by a vet. I hope he starts feeling better soon!

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