Bloody Diarhhea In Puppies

To raise puppies is always nerve-wracking. There are several things essential for the puppy’s health including vaccination schedules, removing foreign bodies from the puppy’s mouth etc. If proper attention not given to puppies, it may lead to severe diarrhoea and some acute diseases.


Observing bloody stool of the dog can be a frightening event as most people will relate blood in the faeces with cancer. However, any owner needs to investigate the reasons for blood in the stool to rule out more severe conditions.


Medically, hematochezia or melena are the terms used for the blood coming with the stool. It is very crucial to differentiate between these terms and to diagnose them precisely. The blood is bright red in hematochezia, showing that it is fresh blood and is coming from the lower intestines, usually from the colon or the rectum. This new blood can come mixed with the dog’s stools or as a few droplets when the dog defecates.

While in melena, the blood is tarry and asphalt black, suggesting that the blood is digested and comes from the upper intestinal tract. Most often, melena is a bit worse as compared to the hematochezia. However, it is a bit difficult to recognise melena as the colour of the dog’s stool is dark, and that doesn’t mean that it has blood in it.


Following are a few ways to check whether the dog’s stool contains blood or it’s just the darkness of the faeces.

  • Place the faeces on an absorbent white paper like a paper towel.
  • Examine whether a reddish tint diffuses from the faeces and if it does, then it indicates the presence of melena.
  • If the blood is there, then it indicates different minor issues like dietary changes, to major problems like parvo or cancer etc.


Diarrhoea is always irritating for the owner as it indicates potentially lethal viral infection to simple indigestion. There is a list of a few causes of diarrhoea with blood in puppies and is as follow

  • Diet change or food intolerance
  • Bacterial infection
  • Viral infection
  • Ingestion of garbage, toxins, or foreign bodies
  • Stress
  • Parasites
  • Hemorrhagic Gastroenteritis


Overeating irritates the dog’s colon thus causing diarrhoea particularly blood with the stool, which can also have mucus. A change in the dog’s diets also has similar effects. It is therefore recommended that the variation the dog’s food gradually over several days. It the change occur too suddenly, vomiting and diarrhoea with the blood may take place.

Other dietary causes occur when the dogs consumed spoiled foods and get food intolerances or allergies. The signs of stomach upset include vomiting, salivation, diarrhoea, gurgling sounds from the stomach, passing gas, desire to eat grass or lick carpets, loss of appetite.


As puppies have the delicate immune system as compare to the adult dogs that make puppies more sensitivity and susceptible to the bacterial infection. Several bacterial infections like Salmonella, E. coli, Clostridium, and other bacteria cause diarrhoea in puppies with blood. These diseases are severe infections and usually accompanied by bloody diarrhoea, anorexia, high fever, dehydration, lethargy, and vomiting.


The viral infection is crucial for puppies as it most often occurs in puppies. The parvovirus, distemper virus are fatal viral infections that affect the unvaccinated and even partially vaccinated puppies. Other viral infection includes coronavirus that is also fatal. All the viral infection requires vet attention.


This diseases among the deadly diseases of dogs. This viral disease is a severe disease mostly found in puppies. Certain breeds of dogs like German Shepherd, Rottweilers, and Dobermans are more prone to get an infection from this viral disease. The typical signs of parvovirus include fever, runny nose, dehydration, vomiting, diarrhoea, lethargy, depression, loss of appetite, and stool with fresh blood. As this is a deadly viral disease, therefore, the puppies suspected with blood with stool should see the vet as soon as possible. The possible treatment that the vet will give include Intravenous fluids, antibiotics, some immune-boosters, and medications for fever.

Parvovirus is a contagious viral disease that can survive for months outside of the host. It is crucial to disinfect all the surface that encounter the dogs after they have been diagnosed with parvovirus. Otherwise, there will be a risk for other dogs to get infected. It is always better to replace the per beds and other products after the identification of parvovirus.


Sometimes puppies eat things that are harmful to them. For instance, puppies may consume poisonous plants or may consume food from the garbage if they have an approach to it. The consumption may lead to puppy diarrhoea that may sometimes become serve that the puppy requires veterinarian intervention to resolve it.


Sometimes the reason for puppy diarrhoea is simple. Sometimes stress can cause diarrhoea both in dogs as well as in human. It is sometimes difficult and stressful for the puppy to explore new things and meet new peoples and adjusting to the new routine of the household. This stress then leads colitis with bloody diarrhoea and mucus in puppies.


Parasites are also among the causes of blood in the stool. Roundworms, hookworms, and whipworms are the major parasites responsible for the blood in the faeces. Internal parasites affect the health of the dog drastically. Fortunately, most of the cases are treatable. However, a few types of worms do not cause noticeable symptoms until the dog’s health is at risk.

The most noticeable signs of the worm infestation include scratching or rubbing of the rear against furniture or other objects, bloated stomach, weakness, enhances appetite, loss of weight—diarrhoea with blood.

The approach of transmission of worms is usually through mothers, dirt, fleas, hunting. The best thing is to take them to the vet. There are several safe and effective treatments available to treat worms. There are a few all in one medication in flavoured chewable tablets to manage all the endoparasites at once.


Gastroenteritis is a Greek word that means inflammation of intestines and stomach. The signs for gastroenteritis are listlessness, vomiting, diarrhoea with blood, dehydration, lethargy, and shock. The cause of gastroenteritis is still unknown but there are several factors that trigger the development of gastroenteritis. These factors include stress, a sudden change in the diet, internal parasites, side effects of previous medications, diet intolerance, etc.

The puppy or adult dog with such signs should immediately see the veterinarian. The vet will make the diagnosis mostly by exclusion, i.e. by performing the test for the diseases that have similar symptoms. The other conditions with similar signs are parvovirus, ulcers, obstruction by foreign bodies, endoparasites, etc. In gastroenteritis, the RBCs count is higher that indicate the presence of gastroenteritis.

The vet after confirming the presence of gastroenteritis with administer I.V fluids, anti-nausea medications, antibiotics, administration of electrolytes, and will advise to keep the dog off feed. It is better to keep the puppy off feed for a minimum 12 hours and 24 hours for adult dogs.


The treatment of diarrhoea mainly depends on the causes. Mild diarrhoea due to stress or dietary transition often resolve by adding a bland diet, probiotics and anti-diarrhea medications gel for digestive support. However, it is always good to consult the vet before adding any home remedy to avoid any severe things to happen. Try to provide plenty of fresh-water to the puppy as even mild diarrhoea may cause dehydration.

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If the puppy gets any bacterial or viral infection, then it is better to hospitalised it until it recovers. The vet may administer antibiotics to treat primary and secondary bacterial infection. The vet may deliver intravenous fluid to avoid dehydration due to vomiting and diarrhoea.

The garbage ingestion does resolve on its own until and unless the puppy ingests something that may cause obstruction. The vet may recommend adding bland diet until the diarrhoea is recovering fully. The consumption of toxins and poison requires a veterinary assistant and the treatment varies depending on the viruses.

The puppy with positive results of worms, the treatment depends on the kind of internal parasites and the severity of the parasites infestation. Some parasites clear up with the medication, while some require a more in-depth approach.


Most of the cases of diarrhoea in puppies are preventable. A few tips of prevention is as follows: –

  • Always change the puppy diet slowly and avoid sudden diet change.
  • Always try to keep kennel clean and disinfect the area regularly to avoid different diseases.
  • Vaccinate the puppy at an appropriate age.
  • Keep unvaccinated puppies away from unvaccinated dogs and public places.
  • Keep the puppy in the kennel when no one is there to supervised to avoid ingestion of garbage and toxins.
  • Deworm the puppy by regularly visiting the vet.
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Diarrhoea is an indication from the puppy to the owner that there is something wrong. Whether it is due to an upset stomach or any other infection, therefore, observing the puppy bowel’s movement will always help the owner to monitor the puppy’s health daily.


It is always better to visit the vet as soon as the signs appear. Mostly, the puppy’s diarrhoea is not severe. However, if the puppy is showing the following symptoms, rush to the vet on an immediate basis.

  • Diarrhoea with blood
  • Black and tarry stool
  • High fever
  • Pale gum
  • Pain
  • Depression
  • Vomiting
  • Ingestion of foreign body or toxic substance
  • Diarrhoea extended more than a day

It is always safe to visit the veterinarian if the puppy is having diarrhoea and suffering from diarrhoea. The parvovirus is a fatal viral disease that requires immediate veterinary attention.


  • Use of NSAIDs
  • Rectal injuries
  • Post-surgery complications
  • Cancer or Tumors
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