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Causes of Mucus in Dog's Stool

Updated on January 28, 2016
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Adrienne is a former veterinary hospital assistant, certified dog trainer, behavior consultant, and author of "Brain Training for Dogs."

Get Into the Habit of Inspecting Your Dog's Stool for Abnormalities

Get into the habit of inspecting your dog's poop.
Get into the habit of inspecting your dog's poop. | Source

Did You Find Mucus in Your Dog's Stool?

When inspecting your dog's stool, were you surprised to see mucus? If so, welcome to the poop inspecting club! It's always a good idea to inspect a dog's stool to see if there is anything unusual or alarming in it. Your dog's stool indeed can tell you many things such as what he ate, if he has parasites, if he's stressed out, or if he's suffering from some form of digestive disorder.

I learned just how important the appearance of a dog's stool is while working for a veterinarian's office and alongside vets in shelters. Dog owners used to drop off many stool samples and specimens of parasites they found. I quickly learned about signs of trouble. Now that I board and train dogs, I always check what their stools look like so that I can report any unusual appearances to their owners and take the dog to the vet if needed.

I recommend dog owners do the same, but not rely on visual inspections alone. Dog owners sometimes tell me, "Oh, I know my dog is free of parasites as I look at his stools daily." Healthy-looking stools may be misleading as there are many things the eyes can't see. For good reason, vets use microscopes to thoroughly inspect what's really in there. Yearly fecal exams are always recommended to keep things in check.

Blood in the dog's stool, parasites at certain stages of growth, odd-looking consistencies, and the presence of mucus are a few things that are visible to the naked eye that can tell you a whole lot about your dog's health. If you found mucus in your dog's stool, you may be wondering where it's coming from and what causes it. In the next paragraphs, we will learn more about it.

What Causes It?

First and foremost, it's importance to note that it's normal to see a little bit of slimy, jelly-like mucus in a dog's stool. Glands in the intestinal tract naturally produce mucus to help keep the colon stay lubricated and moist to help the stools pass along.

It's when the mucus is more abundant than usual that you should be concerned. If you make it a habit to routinely inspect your dog's stools, you'll quickly note when something looks unusual. What does the mucus look like? It's often a jelly-like substance mixed within the stool and sometimes may envelope the stool like a sausage casing. In some cases, the mucus appears white.

So what causes this increase in mucus? Most likely, the colon is to blame. When it is irritated and possibly inflamed, the intestinal tract decides to create an extra layer of protective mucous lining. Following are some potential causes of mucus in a dog's stool:

  • Colitis
  • Stress
  • Dietary indiscretion
  • Food intolerances
  • Recent diet changes
  • Presence of parasites/protozoans
  • Overgrowth of bacteria
  • Foreign objects
  • Imbalance of colon bacteria (the good kind)
  • Polyps and tumors of the intestinal lining
  • Intoxication

Purina Fortiflora Canine Nutritional Supplement Box, 30gm/30 Count
Purina Fortiflora Canine Nutritional Supplement Box, 30gm/30 Count

If the mucus in your dog's stools is caused by an imbalance of bacteria, Fortiflora is a probiotic that can help restore that balance.


Dog Mucus In Stool Treatment

Because some causes of mucus in stool can be serious, it's best to see a vet, especially if the dog has other symptoms such as diarrhea, vomiting, bloody stools, abdominal pain, fever, or lethargy. Seeing the vet is also useful because through diagnostic tests, he/she can most likely pinpoint the problem and provide you with a solution to prevent the problem from recurring.

For instance, in the case of parasites, the appropriate dewormer should kill all parasites and take care of all the associated gastrointestinal problems. Surgery may be needed if there is intestinal blockage or a polyp. Dogs with food intolerance may benefit from a hypoallergenic diet and so forth.

In some cases, the episode of mucus in stool will be short lived and the dog's stool will return to normal after a few days. If it's caused by a dietary indiscretion or a recent diet change, fasting and feeding a bland diet for a few days may help. Probiotics or yogurts containing live culture are also helpful for replenishing helpful flora to the gut. In mild cases, Imodium for dog upset stomach can be used under the guidance of your vet. However, if your dog has other accompanying symptoms and you suspect he might have gotten into something toxic, you should play it safe and see your vet promptly.

Disclaimer: This article is not to be used as a substitute for professional veterinary advice. If your dog is sick, please see your vet for diagnosis and treatment. When reading this article, you accept this disclaimer.

Alexadry © All rights reserved, do not copy.


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      Vital Force 6 months ago

      yes, give Phosphorus 30C in addition to Arsenicum 30C. Both can be purchased at health food store. They are homeopathic remedies. There are no chemicals only natural remedy. Alternate every hour. Or put in water bowl. As a homeopathic practitioner for animals and own a chihuahua myself with bloody stools, I may suggest this.

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      Charlotte 6 months ago

      My 8 week old Chihuahua have blood in his stool and I don't have money for the vet is there anything I can do at home to keep him safe he's dehydrated but I've been giving him water and milk

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      Claudia D. Jones 6 months ago

      The article was helpful. I'm going to make a appointment with the vet.

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      Lainejones 8 months ago

      I'm needing advise on the quantity and feeding schedule to add yogurt to my two pups diet. They are both adult 11 pound Shih-Poos. The vet recommended probiotics after antibiotics did not correct the mucus in their stools.

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      carole butler 13 months ago

      i have a puppy cross yorkshire terrier with Pomeranian, I got from a pet shop I found out that pet shop owner was closed down before but now this shop is in her brothers name ! my problem is the pup has blood in stools sometimes his poo is just a little puddle with blood spots in I wormed with a complete worm pill ,,, still same yes I will take to vets ,but what can I do about pet shop she picked pup up out of 6 and handed over I did not get to look at the others I think she knew and wanted rid asap .

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      louise, rockys mum 15 months ago

      Hi, thankyou for all this info, Il b ringing me vet first thing in the morning to get rocky checked out just to be on the safe side. He is my baby and I don't want him in discomfort

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      teddi 16 months ago

      very helpful will try yogurt had full check by vet 2 weeks ago thank you

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      Colleen 17 months ago

      Thank you for the information. It was very helpful.

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      Adrienne Janet Farricelli 18 months ago from USA

      Happy to hear this article on mucus in dog stool turned out helpful to you.

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      Parima 18 months ago

      Super thank you for the awesome info. I'm calling the vet tonight

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      Adrienne Janet Farricelli 2 years ago from USA

      Thanks Dawn, what I read both forms are correct but mucus is used as a noun and mucous is used as an adjective. Will check and fix throughout where it was used incorrectly.

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      Dawn 2 years ago

      you have good information, but you spelled mucus wrong.