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What to do if my puppy has bloody diarrhea and seems bothered?

Updated On September 23rd, 2025

Pet's info: Dog | Catahoula Leopard Dog | Male | neutered | 5 months and 9 days old | 18 lbs

My puppy has blood in his diarrhea. It happened an hour before. He look like something definitely bothers him. Before 11PM he was fine

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4 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 26th, 2020

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Waffle and for providing a picture, it's very helpful. This blood in his diarrhea could be due to intestinal worms, eating something rotten, a foreign body, parvo if he isn't vaccinated, or a severe stomach illness. He should definitely see a vet for this. As long as he is otherwise ok, it can wait until the morning. If he starts vomiting, has more bloody diarrhea, is very lethargic, stops drinking water, or is vomiting water, take him into an ER vet immediately. I hope this helps!

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12Pet Parents found this answer helpful

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    Answered By Lauren Jones VMD

    Veterinarian

    Published on January 6th, 2022

    I'm so sorry to hear that Myla has been sick so frequently. There are many possible causes of recurrent diarrhea in young dogs - with or without blood. Some of the culprits of this recurrent issue include intestinal parasites (including Giardia), Addison's disease, inflammatory bowel disease, antibiotic-responsive enteropathy, and exocrine pancreatic insufficiency, among others. It's certainly not "normal" for dogs to have diarrhea this frequently, so it sounds like it's time to do a bit more digging diagnostically. After an exam with your vet, I imagine that they'll recommend a fecal test (to check for parasites), baseline blood work (to check organ function and blood cell counts), and possibly an ACTH stimulation test (to rule out Addison's disease). Depending on those results, additional diagnostic testing may be needed. Since Myla hasn't responded to the initial prescription GI diet, your vet will likely want to begin some new medications depending on the cause of this diarrhea. I hope that everything goes well!

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    1Pet Parents found this answer helpful

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    Answered By Sarah Derksen, DVM

    Veterinarian

    Published on March 26th, 2018

    Hi. Blood in the stool with puppies is usually due to either parasites, something they ate that caused stress or inflammation to the GI tract, or Parvo virus. She will need to be seen to Have an exam, a fecal test, and a parvo test. Dogs can contract intestinal parasites via different routes. Parasites are usually transmitted when an animal inadvertently ingests parasite eggs via fecal oral route, or from soil. Puppies can also get it from their mother. Transmission can occur in utero or from nursing. The canine parvovirus infection is a highly contagious viral illness. It is characterized by vomiting, diarrhea, weight loss, and lack of appetite. The majority of cases are seen in puppies that are between six weeks and six months old. The incidence of canine parvovirus infections has been reduced radically by early vaccination in young puppies. Good luck.

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    1Pet Parents found this answer helpful

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    Answered By Destini R. Holloway, DVM

    Veterinarian

    Published on April 17th, 2017

    Poor puppy. I would be concerned that the young pup has either contracted the parvovirus or an intestinal parasite (especially Coccidia). Both of these issues have to be treated by your vet because there isn't any available testing or treatment over the counter; therefore I would suggest taking Nymeria in to the vet right away. Puppies also are higher risk for getting dehydrated when having constant bouts of diarrhea. So if you can't get her in right away I would recommend giving her Pedialyte (non-flavored) mixed with water and 1-2 tsp of canned pumpkin (not the filling) to try and limit her fluid loss. Once the vet sees her they will check her stool for parasites and run a parvovirus test if she seems too sick to have just intestinal worms. I hope your fur baby gets well soon!

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    1Pet Parents found this answer helpful

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