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Why do Dogs Poop Blood? 15 Reasons of Dogs Bloody Stool

Why do dogs poop blood? Dog health should be the priority for every pet owner. An unhealthy situation and illness such as seeing blood in dog stool make the owner sad, worry and nervous. Blood in the dog’s pop occurs for many reasons. As a responsible pet owner, it is the best idea to investigate the exact cause of any canine health issue.

Why do Dogs Poop Blood?

Seeing blood in your furry friend can be an alarming sign of something serious you start to think about. A wide range of different reasons can cause blood in the dog’s poop. Some consider minor and can be treated easily, while some indicate health issues, and many become life-threatening. Before discussing the causes of the bloody stool in canine, let’s first know about the Types of this health condition.

Types of Bloody Stools in Dogs:

In medical terms, There are two types of Bloody stools in canine.

1. Hematochezia:

The stool of the dog suffers from Hematochezia appears bright red. This stool color indicates that the blood is coming from the lower digestive tract known as the colon or rectum. Another sign of dogs suffering from  Hematochezia is the appearance of blood drop after your pup defecates.

2. Melena:

The stool of the dog suffers from Melena appears black and tarry. The colors indicate the blood is firstly digested and then combine with the stool. In this condition, the blood in the stool is considered the issue with the upper intestinal tract.

Melena is challenging to diagnose because many other causes lead a dog to have black stools. A professional vet can diagnose the illness in your pup.

Below we are listing all the possible Reasons of Why do dogs poop blood?

Reasons for Bloody Stool in Dogs:

1. Presence of Parasites:

Parasites affect the health of humans and pets badly. Parasites such as roundworms, hookworms, wipworms and Protozoans such as coccidia are considered the leading cause of blood in the dog poop.

Learn How often to deworm dogs? and always use dogs dewormer with vet advice.

2. Food Poisoning:

Food poisoning can put a canine in severe health conditions, and some time could be fatal. Eating any toxic food or toxic plants, spoiled foods, or over-eating of even healthy food or dietary indiscretion sometimes leads dogs to Food poisoning that badly irritates a dog’s colon.

In such a condition, the dog will suffer from vomiting, diarrhea, and blood in the stools with mucus.

3. Constipation:

Constipation is a common occurring health issue in humans and dogs. Constipated dogs feel difficulty in passing feces. Constipated dogs may pass small amounts of liquid feces with blood due to their excessive straining.

4. Use of NSAIDs

Many NSAIDs are not considered safe for canine use. NSAIDs such as Aspirin for dogs, Ibuprofen for dogs, and Rimadyl, etc., cause bleeding in stomach and intestinal ulcers in pets.

Dogs suffering from bleeding ulcers usually having a black tray and bloody poop. Always use medication with the vet advice and avoid self-medication.

5. Use of Pepto-Bismol:

The side effect of Pepto- Bismol that causes black stool in dogs is clearly written on the bottle of the medicine. This is normal with the use of this medication.

Please remember that overdosing and the wrong use of Pepto-Bismol leads to Gastric bleeding. Always use with vet recommendation.

6. Parvovirus:

Parvovirus in dogs is a deadly and commonly occurring virus in puppies. What does parvo poop look like? Besides other symptoms, black and bloody poop is one of the main symptoms of parvovirus in dogs.

A pup that suffers from the parvovirus will develop symptoms such as vomiting, diarrhea, loss of appetite, weakness, restlessness, and lethargy.

Contact your vet immediately if you see blood in your canine poo along with the mentioned symptoms to timely diagnosis and treatment.

parvovirus blood in dog stool

7. Digestive Tract Injuries:

Sometimes your dog ingest any sharp objects such as glass, bone, or stick that injured the dog’s Digestive tract internally. The blood from these injuries combines with the canine feces.

Don’t give any sharp or hard things that could cause internal injuries in your dogs.

8. Anal Glands Issue:

Many dogs often suffer from Anal sac disease. In the Anal sac issues, the sacs frequently become impacted due to inflammation. If the glands are not properly and timely expressed, it causes severe irritation, inflammation, infection, and the appearance of the blood in the stool.

Make sure to express your dog’s anal glands and learn Why and How dogs anal glands need to be expressed?

9. Rectal Polyp:

Rectal polyps are generally abnormal tissue growth on the mucous membrane of the dog’s rectum. These polyps can be small or large in size. If you observe fresh blood in your canine feces and also observe the drops of blood on your canine anus, then this is the sign that your pet is suffering from Rectal polyps.

Polyps could be internal or external, so endoscopy may be necessary in order to diagnose.

10.Hemorrhagic Gastroenteritis:

In medical terms, when large amounts of fluid seep into the dog’s gut as known as Hemorrhagic gastroenteritis in dogs.  Dogs suffer from Hemorrhagic Gastroenteritis can develop severe vomiting and bloody diarrhea in dogs.

In this health condition, dog poop like jelly with blood,. Sometimes a dog suffers from Hemorrhagic Gastroenteritis loss so much blood in the poo and put a canine life in danger. Immediate treatment is required by a professional Vet.

11. Intestinal Blockage:

Intestinal Blockage or Bowel Obstruction occurred in dogs when your canine ingested a foreign body such as bones, toys, stick glass, or any other things. Such objects are unable to pass through the digestive tract and lodged. Such objects cause internal injuries, and the blood then appears in the pup stools.

These objects are removed with the help of a professional vet, and sometimes surgery is required.

12. Blood Ingestion:

Blood may appear in the dog’s poop due to ingesting blood. Ingesting blood from the wounds, environment, or from mouth and nose injury mixed with the stool and appears black and red in the feces.

13. Surgery Complications:

Many cases reported that a pup has continuously poop blood after surgery. This happens when any post-surgery complication occurs in the form of internal bleeding.

If your pet has recently undergone surgery and poo blood , contact your vet to diagnose the actual cause if there is any internal bleeding.

14. Campylobacter infection:

Campylobacter infection, also known as  Campylobacterosis, is an intestinal bacterial infection caused by Campylobacter jejuni and Campylobacter upsaliensis. A dog that suffers from these bacteria develops symptoms such as mucoid and bloody diarrhea, abdominal pain, fever, and lethargy.


In rare cases, the bloody poop could be the sign of more alarming health issues such as Tumors. To prevent you canine from the future complications take your canine to a vet to timely diagnose the actual cause of the health issue. Why do Dogs Poop Blood?

How do you treat blood in a dog’s stool?

Treatment of blood in a dog’s stool depends on the cause of the health issue. In some conditions, it can be treated with just proper care and diet, and in some conditions, a medical emergency is required.

Treatment of blood in a dog’s stool includes vet visits to diagnose the cause of the bloody stool, change and eliminating diet, de-worming of the parasite, avoiding specific medication, Anal gland expression and keep a pup hydrating.

What do you feed a dog with bloody Diarrhea?

Bloody Diarrhea in dogs needs immediate and proper attention. If your dog has bloody Diarrhea, the first step you need to do is hold your canine food for at least 20 to 24 hours.

After this break, feed your pet a lite and blend an easily digestible diet. You can give boil chicken with boil white rice. Pumpkin help dogs in such heath issues. Avoid kibble food if your dog has bloody Diarrhea.