My Dog is Pooping Blood- help!

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For any dog owner it would be nothing less of a living nightmare if they see blood in their dogs stool. At this moment the most logical thing would be to contact your vet as soon as possible because it could be something serious. However it could also be something small too, like if it is just a onetime occurrence so it is probably a reaction of a change in your dog’s diet.
There are mainly two kinds of conditions where you would see blood in your dog’s stool.


The first, which is not exactly a very serious one, is hematochezia, and the second which is more serious is melena.  In order to understand what is wrong with your dog and why is it producing bloody stool you must understand and be familiar with these diseases.

This is a condition that causes your dog’s feaces to appear bright red. This means the blood is fresh and this blood comes from either the colon or the rectum. Hematochezia is not a very serious condition it is common amongst young dogs and occurs due to either parasites or change in diet. In only a few cases this condition turns into something serious however serious or not you must consult a vet if you see blood in your dog’s poop.

How to know if it’s Hematochezia?

Identifying if the condition that causes blood in the dog’s stool is indeed Hematochezia is quite simple, since in this condition you might either see some specks of bright red blood in the poop or could be mixed in it but not digested.

Causes of Hematochezia:

This is a serious condition and mostly occurs in puppies. This is a deadly virus that can be life threatening for your puppy. Symptoms of Parvo include lethargy, loss of appetite, diarrhea, vomiting and bright red blood in stool. If you see any of these symptoms including the blood in your dog’s poop then contact your vet immediately.

The most common cause of blood in your dog’s stool is caused due to the presence of parasites such as hookworms, roundworms and whipworms in your dog’s system. Contact your vet again to find out what parasite is irritating your dog’s system and what medical measures should be taken to rid your dog of these unwanted guests.

Food changes:

Another very common cause of blood in your dog’s stool could be the changes in its diet which could inflammation of the colon or difficulty for the stool to pass through the rectum. If the changes in the diet are sudden then the dog doesn’t get enough time to cope with it hence it gets sick. The better solution to this would be to not change your dog’s diet all of a sudden but gradually make it used to the new food you would provide it.

Rectal bleeding or injuries:
This condition occurs when your dog eats something solid or something that is not edible for it such as a stick, a tree bark or bones. This could cause digestive problems and the stool difficulty to pass. The best solution to this predicament could be to feed your dog high fiber products for it to aid in its easy digestion.


This is a more serious condition since the blood that appears in this condition is completely digested with the feces. You would know that the blood is digested if the stool would appear tar black or really dark in color. This means the blood is coming from somewhere in the upper intestinal tract. However it is not readily observed since dog’s tend to produce dark stools quite often.

How do I know if it’s Melena?

To know if the blood in your dog’s pop is indeed a cause of melena then you would have to carry out a small procedure. The procedure is quite simple actually, place your dog’s tool on an absorbent paper such as a paper towel and wait for some time. If the blood diffuses into the paper, then you could see spotting of red substances. This is how you know your dog has melena and do not wait any further symptoms to take any action since melena’ scan almost always proves to be harmful.

Causes of Melena:

Cancers or tumor:
If you have an elderly dog chances are that it has a cancer or tumor which is causing the internal bleeding which then gets digested in the stool.

These are called Non-steroidal anti-inflammatory drugs such as aspirin which are more prone to cause ulcers within your dog’s system. These ulcers then cause your dog’s poop to turn tar black hence indicating that your dog needs immediate attention.

Post-Surgery bleeding:
If your dog has recently had surgery and right after that it produces tarry black stools you should know that this is an indication of internal bleeding and your dog needs extensive care as soon as possible.

Ingestion of blood:
Tarry black stool is produced because the blood is digested with your dog’s stool. This source of blood could also come from your dog ingesting bloody things or food. It could also indicate to any mouth injury which caused your dog to swallow its blood hence producing the dark poop. Either way you must contact your vet if see blood in your dog’s poop.

Other causes:

There are several other causes that makes blood appear in your dog’s stool, these causes can be:

  • Stress
  • Trauma
  • Intestinal blockage
  • Cancerous cells
  • Bacteria or any sort of other infections

Whatever the reason might be or however bright or dark your dog’s bloody stool looks you must consult your vet immediately. Because it could turn from something mild to major in just a matter of time. For the better health of your dog keep checking its stool and keep a close eye on its behavior and what it ingests. Any suspicious behavior along with a bloody stool do not hesitate to take any action and get into contact with your vet, because your dog deserves the utmost care.

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