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8-week puppy: bloody stool, diarrhea, worms. When to see a vet?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | unneutered | 1 month and 24 days old | 56 lbs

my 8week old puppy had bright red blood in his stool today yesterday also and he had pooped an excessive amount about 9 to 10 time in a row. he had his first round of shots last Saturday and was given a deworming medicine. He hasn't shown any signs of worms till this morning that I noticed a long worm like thing in his stool. He had a bit of diarrhea and threw up once this morning but that was it has been fine all day but I notice the blood in stool once yesterday and once today. Should I worry?

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4 Answers

Most Helpful Answer

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on August 15th, 2018

Hi there and thanks for posting! I wouldn't start to worry unless Harley starts experiencing an increase in bouts of diarrhea and vomiting. You can try feeding him a bland diet of chicken and rice with a few tablespoons of plain canned pumpkin (not the pie filling ) for a day or two and see if that helps firm up his stool a bit. If the diarrhea and vomiting continue happening, however, I would recommend having Harley seen by his veterinarian. There may be other causes such as a viral or parasitic infection that will need to be ruled out with your vet. I hope this helps and thanks for using Petco Pet Education Center, formerly Petcoach!

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    Answered By Emily Fukuzato, DVM

    Veterinarian

    Published on July 15th, 2017

    Looks and sounds like it can wait. He does need to be seen however because that looks like some blood in the stool. Blood on semi formed to formed stool indicates inflammation of the colon and typically requires treatment. So long as he continues to feel and eat well. If he strains some and does not want to go out like every 30-60 minutes to poop, I would wait. But if any of this changes then I would take him in. Eggs and a lot of parasites are microscopic so what you are seeing is likely food related. Unless it's been sitting out for a while then you might be seeing fly eggs on the poop.

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    Answered By Vanessa Yeager DVM MPH

    Veterinarian

    Published on November 29th, 2017

    Hi there and thanks for posting on Petco Pet Education Center, formerly Petcoach! Puppies need to be dewormed with a broad spectrum dewormer such as pyrantel several times (3-4 times with each dose being 2 weeks apart from each other) as many puppies are born with roundworms they get from their mother's during pregnancy. It can take a few rounds of dewormer to get rid of them. If Roxy is vomiting up worms, then she likely has a very heavy intestinal worm infection. Sometimes this can cause nausea and inappetence as well. Occasionally, if the worm density is high, they can cause a gastrointestinal obstruction. I would withhold food for a few hours from Roxy to help with the vomiting and take her into see her veterinarian as soon as possible to rule out an obstruction or vomiting/inappetence from other medical cause such as a viral infection. Your veterinarian may recommend Roxy be dewormed a few more times and may send you home with more dewormer for her if nothing more serious is suspected from your vet. I hope this helps and I hope Roxy starts feeling better soon!

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    Answered By Dr. Dayna, DVM, CVA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on October 25th, 2017

    I’m sorry to hear Harley is sick. I would recommend that you have her seen by a veterinarian tomorrow. Intestinal parasites can cause significant gastrointestinal disease as well as even an obstruction if there is a large worm burden. Please take the worm you found with you to the veterinarian so they can identify it and be able to use to most effective medication. She may also need anti nausea medication to be able to keep the the deworming medication from being vomited back up. Best of luck and I hope she improves soon.

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