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Why is my dog having bloody diarrhea and not eating for several days?

Updated On September 23rd, 2025

Pet's info: Dog | Pomeranian | Female | spayed | 5 years old | 9 lbs

My 6 year old female prom. Has been getting diarrhea with bright red blood on and off for a couple years but it always goes away after a couple of days, we have taken her to an emergency debut when we get there she acts all better and her vet just says it could be a tummy issue I am just worriedithasbeen 3 days and she would t eat her treats or much food

1 Answer

Most Helpful Answer

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Answered By Christie Long, DVM

Veterinarian, Certified Veterinary Acupuncturist

Published on May 7th, 2017

Blood in the stool, even if it seems to "go away" and come back later, is never normal. The fact that it's accompanied by diarrhea suggests colitis, or inflammation of the colon, as opposed to some type of bleeding mass in the rectum or colon. Colitis can have a number of causes, including dietary indiscretion (eating something rotten or non-food), parasites, food allergies/food sensitivities, inflammatory bowel disease, or infection. Leah may improve with a diet change, perhaps a more digestible diet specifically for gastrointestinal problems. To assume it's a "tummy issue" could be to ignore causes that are treatable, and at this point she's not only having diarrhea but she also lost her appetite. It's been three days and she's not improving, so I recommend having her seen by her vet for labwork to include parasite testing, blood work, and urinalysis for starters. If all is normal consider a bland diet (as recommended above), and a probiotic supplement. Ultimately, she may need to have biopsies taken to diagnose the exact cause.

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