Dog Diarrhea: What To Give, Treatment, Causes, Home Remedies, And More

This content was reviewed by veterinarian Dr. JoAnna Pendergrass, DVM.

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Dog sick on bed (caption: How To Diagnose & Treat Dog Diarrhea)

Since ancient times, physicians have looked to stool samples as a reference point for the health of their patients. For dogs, referencing stool samples is a more viable option than ever because of the rising costs of vet care.

Concerned pet parents and vets can learn a lot by looking at a pet’s stool samples. And when it comes to puppies, what you learn might even save their lives.

How To Diagnose

Diarrhea is defined as loose or unformed stool that occurs in larger-than-usual amounts, more often than usual, or both. If your dog has diarrhea, you’ll notice some obvious changes in his bathroom habits. For example, he will want to go outside more. He may also have more frequent bathroom “accidents”, than he normally does.

If you think your pup has diarrhea, you may need to check his or her feces to inspect the consistency. It can often be hard to tell if puppies have diarrhea because they generally have a soft stool to begin with. However, if the diarrhea is almost liquid, this is a sign that something is wrong.

Even if you’re fairly sure that your dog has diarrhea, you’ll want to talk to your vet. A quick phone call to your vet may be all that’s needed to get started on treating the diarrhea, especially if the diarrhea is mild and your dog otherwise seems fine. You could also take your dog to your vet for an official diagnosis. Your vet will perform a physical exam, a fecal exam, and possibly other diagnostic tests to figure out what’s causing the diarrhea and how to treat it.

Types Of Dog Diarrhea

Dog with diarrhea in grass

Dog diarrhea is categorized into types according to duration (acute vs chronic) and location (small bowel vs large bowel). Let’s go through each of these.


The duration of the illness may help you and your vet better understand whether this is a short-term concern or a longer-term health concern to be watched and treated.

  • Acute Diarrhea: Lasts for fewer than 14 days
  • Chronic Diarrhea: Lasts for 14 or more days


While one is not likely to be a more significant concern than the other, identifying where the problem originates is essential for determining the diagnosis and treatment plan.

  • Small Bowel Diarrhea – abundant in quantity and can have dark red blood (melena). It typically has a loose and watery “cow-pie” appearance. Dogs with small bowel diarrhea will have a normal or increased frequency of defecation.
  • Large Bowel Diarrhea – small in quantity and can have flecks of fresh, bright red blood (hematochezia). It is loose to semi-formed. Dogs with large bowel diarrhea poop far more frequently than dogs with small bowel diarrhea.

Appearance Of Dog Diarrhea

Black dog poop with worms

Believe it or not, there are several types of diarrheas. It’s important to know the normal state of your dog’s stool so that you can accurately determine if it’s any different than normal. Normal dog stool is solid, formed, and chocolate brown. Contact your vet if you notice any of the changes that are described below in your dog’s poop.

  • Soft Stool With No Blood Or Mucous – If your dog has soft feces, it may be something as simple as having eaten a new food or an object that wasn’t meant for consumption. However, it may also be a sign of parasites or stress. Monitor your dog closely and seek medical attention if the condition persists or worsens.
  • Greasy Gray Stool – When dogs have this type of diarrhea, it is usually a sign that they have eaten greasy food or too much fat. Reduce the fat content of the food your pup consumes to see if this solves the problem.
  • Black Stool With A Tar Type Texture – When your pup has a black, tarry look to his feces, it’s a sign that there is old blood in his digestive system, typically in the upper digestive tract (stomach, small intestine). This may be a sign that the pup ate something that caused internal damage, or that he or she has a serious disease such as cancer, or a tumor. Seek medical attention immediately.
  • Liquid – Dogs that have liquid diarrhea may have a viral or intestinal infection. Since dogs are at high risk for dehydration in these situations, be sure to monitor the pup closely and use preventative methods of treatment. If the condition persists, seek medical attention.
  • Mucous – Dogs who develop a stool with a mucous-type membrane or stringy substance may be at serious risk for diseases such as Parvo. It may also be an indication of the presence of parasites. Seek medical attention immediately.
  • Worms Or Other Living Things – If you notice that there are worms or other living things present in your dog’s stool, promptly take him or her to the vet so they can be treated accordingly.

Solid Stool With Fresh Blood

Poop on a pebble driveway (caption: What Does Your Dog's Poop Color Mean?)

When your pup has any type of blood in their stool, he or she is experiencing a serious health problem. If the blood is fresh, it is a sign that there is currently bleeding inside of your pup. It may be in the large intestine or the anal glands. Your pup may have eaten something that perforated his or her intestinal wall or this may be a sign of the eruption of a tumor or an ulcer. Seek emergency medical attention immediately.

Soft Or Runny Stool With Blood Or Blood Clots

Bloody diarrhea can be an indication of a serious health problem. That problem can range from something the dog has eaten to more serious conditions like parasites or parvovirus (Parvo). The fact that your pup not only has diarrhea but also has blood in the diarrhea should be taken seriously. The condition may pass within a day or two if the pup has eaten something unhealthy, However, if the pup, especially a young, unvaccinated puppy, has a disease such as Parvo, they can quickly dehydrate and die within a day or two. Seek medical attention immediately.

Learn More About What Your Dog’s Poop Color Means

Diet To Prevent Dog Diarrhea

Kids giving dog table scraps

With puppies, it can be difficult to assess the true cause of diarrhea because they are very much like human babies: their system is young enough to have difficulty processing new foods, so any change in diet can cause diarrhea. A few things you can control through their diet to ensure their stomach stays at ease:

  • Avoid Giving Table Scraps – Not only can table scraps cause bad habits such as begging during dinner, but the constant change in food will make it difficult to assess if the pup is having any health problems.
  • Maintain A Consistent Diet – Keep your dog on a consistent diet (at least until they are old enough to begin eating adult food). By then, you’ll have seen enough of your pup’s stool samples to be able to establish a baseline of what their stool looks like. If you constantly change his diet, there will be no baseline and you will have problems trying to establish whether your pup is actually sick or if the change in stool is due to a change in diet.
  • Keep A Watchful Eye On Your Dog – Watch your pup closely, especially until they outgrow the chewing stage. Before this stage is over, they will swallow more unhealthy items than you ever thought of and keeping a close watch can save you a lot of worry in the long run.


Dog diarrhea has a long list of causes, ranging from a mild case of digestive upset to serious health conditions like inflammatory bowel syndrome or liver disease. After your vet has diagnosed your dog’s diarrhea and determined what’s causing it, they will devise a treatment plan to treat (or manage) the underlying cause and get your dog’s poop back to normal. Your primary goals in treating your dog’s diarrhea should be to get your dog’s poop back to normal consistency and get the frequency of your dog’s bathroom habits back to normal.

Do not attempt to treat your dog’s diarrhea before talking with your vet and knowing what’s causing the diarrhea. Although simple at-home treatments may be all that’s needed in mild cases of diarrhea, it’s best to wait until after you’ve talked to your vet to start any type of treatment.

And remember, vets are not cheap so consider getting pet insurance to help offset some of the bills. We have a guide to help you decide whether pet insurance is worth it, and our experts have chosen the top providers for this year.

Home Treatment

If your vet has advised you that you can treat your dog at home, be prepared to be diligent and ready to seek medical attention if your dog’s diarrhea does not improve.

Keeping Your Dog Hydrated

Dog and cat drinking out of a water fountain (caption: Best Pet Water Fountains)

To keep your dog hydrated, you need to make sure he has plenty of fluids and electrolytes. Unlimited access to fresh water is the first choice of liquids. A dog water fountain can help entice them to drink. Unflavored Pedialyte and other electrolyte-filled liquids are additional options to help your pup stay hydrated, but you have to get the liquid into the pup’s system. This can be difficult if your pup is not interested in eating or drinking. If this is the case, use a syringe to give your pup the liquid. Talk with your vet to determine how much liquid to give your pup and how often.

Place the syringe at the back of your dog’s mouth, near the top of the throat. If he has trouble swallowing, massage the throat. This will cause a natural reaction of swallowing. (You can also put the syringe in the back of the pup’s cheek.) If the dog has no problems swallowing, this method may be more comfortable for him.

Feed Your Pup Easily Digestible Food

Chicken broth preparation on stove

If your dog is able to eat, give him chicken broth. When he is able to eat the broth, add unseasoned boiled chicken and/or rice to the broth. This type of food is easy for the dog to digest and does not have the fat that is often found in beef products. You want to avoid fatty foods that may make the diarrhea worse. Continue upon this course of action until the dog is behaving normally and has solid stool.

Other Treatments

If your pup has more than just a mild case of diarrhea, it is likely that they will need additional treatments to treat the diarrhea. For example, if your dog has a bacterial infection in the digestive tract that’s causing the diarrhea, antibiotics would be needed. For intestinal parasites, your pup would be given a dewormer to kill the parasites.

If your pup is severely dehydrated or otherwise ill from the diarrhea, they will need to be hospitalized to receive more intense treatment, such as intravenous fluids. Your vet will let you know the level of treatment that your pup will need.

Health Risks

One of the biggest risks associated with diarrhea in pups is dehydration. However, there are other risks to be concerned about. Continuous diarrhea can cause problems with the digestive tract in general and lead to serious nutrient and electrolyte deficiencies. Something else to consider is the spread of disease. Your pup may pass their illness along to other pets in your household.


Dog with sick mask on (caption: Parvo in Dogs)

Parvovirus is a virus that can be found in various environments, such as on the ground in contaminated feces and on surfaces like food and water bowls. Parvovirus is an especially contagious virus. Not only can the dog spread it to other canine members of your household, but you can also transport the virus through your shoes and clothes to other households and thereby infect other dogs. The virus is very hardy and can last for a long time in the environment. It can be deadly to unvaccinated puppies as well as animals that may have problems fighting disease.

The only sure way to kill the virus is with household bleach (1 part bleach to 30 parts water). To be safe, disinfect anything in your indoor environment that your pup came into contact with (bedding, food and water bowls, etc.). Do not disinfect your yard. Rather, you can water your lawn or let rain dilute the virus. The diarrhea that comes with Parvo can be so watery that you may not even see it in the yard.

Dehydration Due To Diarrhea

Dehydration is one of the worst potential results of diarrhea. Every dog owner should learn how to check for dehydration. To do this, you first need to assess how your dog normally is.

Look At Color & Dryness Of Gums

Look at dog gums
Dog with healthy gums

Check the gums of your dog. They should be pink and shiny with wetness. If you push on the gums, the area that you push on should automatically fill back up with blood within two seconds. If your dog’s gums feel sticky or do not quickly fill back up with blood after touching them, your dog could be dehydrated. Check your dog’s gums before he gets sick so that you have something to compare the results to if he does get sick.

Check Skin Elasticity

Much like humans, the liquids in your pup’s body helps his or her skin to maintain elasticity. If you pinch the skin on your hand, it should go back to its original shape as soon as you let go of the skin. The same is true of your pup but can be hard to see because of the fur. Grasp the skin on your dog’s neck. When you let go of the skin, it should immediately fall back in its place on the dog’s neck. If the skin maintains a tent-like shape after you let go of it, your pup is dehydrated and needs immediate veterinary care. If you are unable to get to the vet immediately, you can use the treatment method listed above to help with the dehydration until you can get to the vet. However, you should get to the vet as soon as possible for intravenous fluid therapy.

Antibiotic-Induced Diarrhea

Dog Taking Medicine

When referring to diarrhea in dogs, it is important to distinguish between diarrhea induced by antibiotics and diarrhea caused by illness. Diarrhea that is caused by antibiotics can occur shortly after antibiotic treatment begins.

When dogs (just like people) take antibiotics, they can experience side effects including diarrhea. This type of diarrhea occurs because, while antibiotics are designed to kill off bacteria causing the infection (or prevent infection in the case of post-surgery antibiotics,) they can also kill off the beneficial bacteria in your dog’s digestive tract. As the beneficial bacteria numbers in your dog’s intestines declines, the balance of bacteria in the intestines is thrown off and diarrhea results.

Factors That Affect Dog Experiencing Diarrhea From Antibiotics

Cartoon of veterinarian petting dog next to piggy bank (Caption: Start Saving Money On Vet Bills, Compare Pet Insurance Rates In Minutes; Button Text: Get My Quotes)

Not all dogs will experience antibiotic-induced diarrhea and there are a number of factors that will determine whether your dog does.

  • Overall Health – One of the biggest factors influencing whether or not your dog will experience antibiotic-induced diarrhea is their overall health. Some dogs – just like some people – tend to have weaker immune systems and “weaker stomachs.” These dogs are more likely to experience diarrhea as a result of antibiotic use.
  • Type And Strength Of Antibiotic Used – Another major player in determining whether or not your dog will experience diarrhea on antibiotics is type, dosage, and potency (strength) of antibiotic used. Certain types of antibiotics are simply stronger in terms of being able to kill off bacteria in a shorter time period, and these antibiotics can quite quickly result in an upset stomach. Additionally, the dosage of antibiotics can play a role in antibiotic-induced diarrhea as well. A higher, more aggressive dosage could quickly kill the bacteria but also increase the risk of diarrhea.
  • Length Of Treatment – The longer a dog is exposed to antibiotics, the higher the risk that beneficial bacteria in their digestive tract will be killed, resulting in diarrhea.

Should I Stop My Dog’s Antibiotic Course If It’s Causing Diarrhea?

Pet owners are always advised to give their pups their recommended course of antibiotics in order for the treatment to be fully effective in killing infection-causing bacteria. There is a question however, as to whether antibiotic therapy should be continued even if it is resulting in severe diarrhea. The problem in this case is that stopping antibiotics runs the risk of recurring infection. However, continuing the antibiotic may result in severe dehydration and malnutrition.

If your dog is experiencing severe diarrhea as a result of antibiotics, it is always best to consult your veterinarian before stopping your dog’s medication. Your vet may recommend an anti-diarrheal to be taken in conjunction with the current antibiotic so that the current treatment course may continue. Your vet may also recommend switching to another type of antibiotic that has a lesser occurrence of diarrhea. There are a number of antibiotics that are known for being gentler on the stomach and a handful that are known for being particularly harsh. If your dog has had trouble with antibiotic-induced diarrhea before this is worth mentioning to your veterinarian. This type of information can help your vet to select a medication that will be gentle on your dog’s stomach.

Unfortunately, in some circumstances, there is no other option than treatment with the current diarrhea-causing antibiotic. This type of situation does not occur too often but when it does it occurs as the result of targeted medications that lack alternative treatment methods. When this occurs, your veterinarian will assess your dog’s overall situation and suggest a course of treatment that is right for your dog. This course may consist of continuing the antibiotic or stopping the antibiotic and trying another treatment approach.

What Can I Do To Prepare My Dog For Antibiotics?

In many instances when pet owners know that their dog is prone to antibiotic-induced diarrhea they can begin preparing their dog for antibiotic treatment as soon as they receive the diagnosis. This preparation includes stocking up on a number of items:

Dog Probiotics

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The use of probiotics for dogs has been questioned because little research exists to support its benefit; however, many dog owners that have dogs that are prone to antibiotic-induced diarrhea find that probiotics are very helpful.

Probiotics are sold in most pet stores as supplements that can be added to food or ingested in pill form. This supplement introduces billions of beneficial microbes into your dog’s gut, thereby boosting the production of digestive enzymes and improving overall immune function. One of the most popular canine probiotics currently is made by Purina. Read our reviews of probiotics for dogs.

Chicken And Rice Or Prescription Food

As with people, maintaining a bland diet is important for your dog when their gut health is compromised. Most veterinarians will suggest feeding a diet of unseasoned boiled chicken and white rice in order to keep your dog’s diet as bland as possible. The ratio of chicken to rice in this combination should be 1:3.

Anti-Diarrheal Medication

Always check with your veterinarian before implementing a course of anti-diarrheal medication for your dog. If your vet approves this treatment, then make sure that you have the appropriate medication on hand when your dog is prescribed antibiotics. Imodium (loperamide) is commonly used to treat diarrhea in dogs and cats, but if symptoms do not clear up quickly with use, contact your vet again to discuss other options.


Person holding medicine in hand (caption: Which Which Over-The-Counter Medications Are Okay For Dogs?)

Unflavored Pedialyte is a good tool to have on hand for a dog that is prone to antibiotic-induced diarrhea. Anytime your dog suffers from multiple incidences or prolonged incidences of diarrhea they run the risk of electrolyte imbalance. Offer your dog unflavored Pedialyte to keep their electrolyte levels healthy. If your dog refuses, talk to your veterinarian about other methods for maintaining healthy electrolyte levels in your dog with antibiotic-induced diarrhea.

Check with your vet about how much Pedialyte to give your dog.

Find Out Which Over-the-Counter Drugs Are Dog-Safe


There are several easy things you can do to prevent diarrhea. For example, keep your dog up to date on all of their vaccinations. Be sure to take your dog to the vet for an annual wellness visit to detect and treat health issues as soon as possible.

Choose a nutritious dog food and stick with it. Change brands gradually if your pet develops food allergies but try to stick with a healthy dog food — visit our review of various high-quality dog food delivery options — and do not feed your dog table scraps.

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