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Why is there blood in my dog's poop? What are the common causes?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Female | spayed | 1 year and 10 months old

I recently noticed blood in my dog poop... what cause it to happen? She eats only grain free salmon dry food.

4 Answers

Most Helpful Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on February 22nd, 2018

Blood in the stool can be caused by a number of issues, including intestinal parasites, irritation in the colon, ulcers in the intestines, masses in the colon/rectum, among others. Since Poli is a young dog, intestinal parasites would be my main suspicion, so I recommend taking a stool sample to her vet for microscopic evaluation. If the blood in her stool continues, or if she becomes lethargic, stops eating, or begins vomiting, Poli will need to go to a vet for evaluation urgently. I hope that all goes well!

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Other Answers

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on August 4th, 2019

    Thanks for using Petco Pet Education Center, formerly Petcoach! Bloody stools can be observed with conditions such as colitis, gastroenteritis, dietary indiscretion, intestinal parasites, among many other possibilities. I recommend that you have Tommie evaluated by your veterinarian for further assessment and treatment. They may choose to check for parasites and to start medications depending on the results. Good luck! Hoping for a speedy recovery!

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on May 25th, 2019

    It can have some very serious causes including parvovirus, hemorrhagic gastroenteritis, a GI obstruction, GI ulcers, or trauma to the GI tract. It could also be due to intestinal worms. If it's a small amount of blood, you can wait to have Atari seen by a vet on Monday. If it increases, she starts vomiting, has diarrhea, becomes lethargic, or anorexic, take her into a vet immediately. Best of luck.

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on August 22nd, 2018

    It sounds as Milois suffering from a gastrointestinal condition, possibly an infection. it could also be due to ingestion of a foreign body material. i would recommend taking him to the vet the first chance you get, he will need to be checked first, if the vet thinks it's a simple gastrointestinal infection he will need an antibiotic course and a special food for a few days in order to get better.

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