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My 40-day puppy is vomiting and has bloody stool. Is it parvo?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | unneutered | 1 month and 10 days old | 3.52 lbs

Hello my 40 day puppy is vomiting everything he eats and his stool contains mucus and blood. Does he has parvovirus?

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4 Answers

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on April 21st, 2018

It could be parvo but it could also be other things. you need to take him urgently to the vet for him to get hospitalized and treated, if it is parvo his chances are not good at his age but if it is something else he could survive if he receives the correct treatment.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on January 1st, 2017

    Parvovirus is a severe viral infection that typically infects young unvaccinated puppies, and rare older unvaccinated dogs. Parvovirus is caused by canine parvovirus type 2b. Symptoms include bloody and very smelly diarrhea, lethargy, anorexia, and severe vomiting. There is no cure for it, only symptomatic treatment, and is frequently fatal. GI infections can be caused bacteria, medications, viruses, or parasites. While it also causes vomiting, diarrhea, lethargy, and anorexia, there typically isn't a bad smell to the diarrhea, nor is it as deadly. Parvo is highly contagious, while GI infections are not necessarily infectious depending on the cause. Parvo can be diagnosed with a blood test, and because it's so life threatening, diagnosis and treatment must be instituted as soon as possible.

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    Answered By Sarah Derksen, DVM

    Veterinarian

    Published on September 5th, 2019

    Hi. If your puppy is having vomiting and diarrhea, I worry about parvo or parasites. I would take him to the ER!! Puppies are very prone to dehydration and hypoglycemia very quickly and parvo is very uncomfortable and very contagious

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    Answered By Maria DVM

    Veterinarian

    Published on December 30th, 2018

    Parvo is always on the list. I would highly recommend a veterinarian as soon as possible since a puppy can get sick and decline quickly. They can also get dehydrated. It may also be intestinal parasites which can be zoonotic (which means you can get them) so washing your hands after picking up after her is important. Your veterinarian will test a stool sample and send home a bland diet, a dewormer and potentially antibiotics. Thank you for using Petco Pet Education Center, formerly Petcoach.

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