Dog with dark diarrhea: causes and treatments

Author: John Stephens
Date Of Creation: 22 January 2021
Update Date: 16 May 2024
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Diarrhea in Dogs: How To Quickly Treat At Home
Video: Diarrhea in Dogs: How To Quickly Treat At Home

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Dogs cannot communicate through speech with their guardians, but their behavior and symptoms can show if something is wrong or different. It is important that dog handlers pay attention to your pet, thus they can guarantee better health and well-being to the animal. For example, you won't know if you have a dog with a stomachache or even realize you have diarrhea and vomiting without paying attention to the animal's feces and different behaviors.

Diarrhea is a symptom that can have several causes, so it is necessary to monitor a professional to ensure better treatment for the animal. If you have a dog with this symptom, we at PeritoAnimal bring this article with causes and treatments for dog with dark diarrhea, so that you are aware of what may be happening to your dog.


My dog ​​has diarrhea

First of all, you need to understand that dog diarrhea it's not a disease, but rather a symptom or result of a disease that may be affecting the animal. Diarrhea itself is the malfunction of the dog's defecation process. The dog's feces need to be the same size, color and consistency, so pay attention, a healthy dog ​​cannot make soft, dry and too much poop, the ideal is always to be firm, moist and in small quantities. Any characteristics that deviate from this may indicate a problem with the animal's health.

Diarrhea in a dog is characterized by increase in the frequency and volume of the animal's feces. In addition to leaving the diarrhea liquid, stool with phlegm, undigested food, fat and blood can be found in the dog's feces.


It may sound disgusting, but paying attention to the color and consistency of your dog's stool can go a long way in keeping your dog healthy.If your dog has changes in his feces, the veterinarian will request a sample of them for further analysis, so that it is possible to make the diagnosis as accurately as possible and indicating the best treatment for the dog.

Types of diarrhea in dogs

Diarrhea can be caused in either the large or small intestine and is classified into two categories: acute diarrhea and chronic diarrhea.

Acute diarrhea:

Symptoms of animals with acute diarrhea usually last less than 48 hours. It is common to find mucus-filled stools and bloody stools, which causes red stools. The dog increases the frequency of defecation and decreases its appetite. This type of diarrhea is usually caused by disturbances in the small intestine.


Chronic diarrhea:

Symptoms of animals with chronic diarrhea usually last 7-10 days. It is common to find black diarrhea, caused by the presence of digested blood in the stool and there is no presence of green diarrhea or green stool.

This type of diarrhea can be caused by several reasons, including:

  • bacterial infection
  • virus infection
  • Intestinal parasite infection
  • Stress
  • Intoxication
  • Allergy
  • Change in food
  • Dysfunction of any organ of the animal (eg, liver, kidney, pancreas, among others).

bloody diarrhea

In these cases of chronic diarrhea, the presence of black diarrhea due to the frequency of blood in the stool. Cases of dogs defecating blood may indicate a inflammation in the large intestine of the animal. It is important that you take your dog to a veterinarian, to be sure what may be happening to his body and so that the best treatments are indicated.

In addition to inflammation in the dog's large intestine, there are other causes that can leave the dog evacuating blood, and they include:

  • Lack of water
  • Changing the animal's diet
  • Allergy
  • Ingestion of sharp objects (including bones)
  • gastric ulcers
  • rectal infections
  • Perianal gland infections
  • Intoxication
  • worm infection
  • parvovirus

All the causes the dog may have dark diarrhea can be emergenciesTherefore, if you notice this characteristic in your dog's feces, don't hesitate to take him to the veterinarian!

Other types of diarrhea in dogs

In addition to dark feces, there are other types of dog feces that can indicate that the animal's body is suffering from some situation, among these types are:

stools with a lot of blood

If your dog is showing a lot of blood at the time of defecating, it is essential that you take the dog straight to the veterinarian to avoid bleeding. This symptom may be from a condition known as hemorrhagic gastroenteritis.

yellow or orange stools

If your dog is showing yellow or orange stools, this could indicate liver or biliary diseases, ie diseases related to the animal's liver. In these cases, it is important that you take the animal to the veterinarian so that the diagnosis can be made accurately.

gray feces

If your dog is showing gray stools, it could indicate poor nutrient absorption or poor nutrition. This symptom can usually indicate a condition called exocrine insufficiency, which is characterized by a malfunctioning pancreas that causes the dog's body not to absorb all the nutrients.

green stools

Greenish stools may indicate that your dog may have ingested some toxic food. Therefore, do not hesitate to take the animal to the veterinarian for follow-up.

stool with worms

It is common to find worms in the feces of young animals, as well as their eggs through microscopic analysis. It is important that you collect a sample of your puppy's stool so that your veterinarian can identify the best treatment for the worm found.

Treatments for Dog Diarrhea

To carry out the treatment of diarrhea in dogs, it is necessary to determine the disease that is causing this symptom in the dog. To make this possible, the veterinarian may perform clinical tests such as blood tests and radiography, request the animal's history and ask questions about the dog's diet and routine.

It is important that you deprive the animal of food for a day or two and keep water available at all times. Dogs with diarrhea and vomiting lose a lot of fluid and it is essential that they are always hydrated so that they do not develop other diseases and symptoms resulting from dehydration.

If the animal is very dehydrated and/or is not drinking water, it is necessary to administer intravenous fluids, which must be prescribed by the veterinarian.

In addition to clinical measures, there are some attitudes you can have at home that help with diarrhea dog treatment, and they are:

  • After the fasting period, you should reintroduce the dog's food gradually, in small amounts, 3 to 6 times a day.
  • Offer foods that are easily digested and prefer those that are low in fat and fiber. We have an article on dog food with diarrhea.
  • Don't give the dog bones and crackers, these foods can end up causing irritation in his gastrointestinal tract.
  • You can also choose to treat your dog with diarrhea with home remedies.

This article is for information purposes only, at PeritoAnimal.com.br we are not able to prescribe veterinary treatments or perform any type of diagnosis. We suggest that you take your pet to the veterinarian in case it has any type of condition or discomfort.

If you want to read more articles similar to Dog with dark diarrhea: causes and treatments, we recommend that you enter our Intestinal Problems section.