Why does my dog ​​vomit and have diarrhea?


Gastroenteritis is a frequent digestive problem among dogs that can be a sign of food intolerances, poisonings or tumors

  • Publication date: July 4, 2013

The digestive problems of dogs, including gastroenteritis, are the most commonly treated in veterinary clinics. Behind the symptoms of this pathology, vomiting and diarrhea in the dog, there may be food intolerances, intoxications or tumors. The following lines explain the Causes and symptoms of gastroenteritis in dogs, guidelines to prevent this disease, as well as the steps to treat the dog at home.

Vomiting and diarrhea in dogs, more dangerous than they seem

Untreated gastroenteritis can cost the dog a life. But it can also be the warning of other serious pathologies. Gastroenteritis is a disease that consists of the inflammation of all or part of the can digestive system and its symptoms vary depending on the area affected, the causes that cause it or the degree to which the digestive system is affected.

Vomiting and diarrhea are common in dogs, and their causes can be varied.

Veterinarians say that dog gastroenteritis, whose main symptoms are vomiting and diarrhea, is a common disease among veterinary clinic patients. "This pathology is especially common among puppies," Immaculate Stairs, veterinarian.

Food intolerances are frequent among puppies. "Cases of vomiting and diarrhea in young dogs due to food allergies, especially gluten are common", says Ladder. When the puppy recovers from gastroenteritis, but a recurring recurrence a week later, it is the warning that after vomiting and diarrhea, there may be a problem of intolerance to certain foods.

Gastroenteritis in dogs, causes

The reasons why a dog can get gastroenteritis are diverse. Therefore, it is one of the pathologies that is most attended in veterinary consultations.

Some of the most common causes are:

Infections caused by diseases such as parvovirus, leptospirosis, hepatitis or distemper, which cause digestive problems in dogs.

The dog's vaccination schedule includes immunization against these diseases and is the best way to prevent the dog from getting them and, therefore, suffering from gastroenteritis.

Can poisonings with various substances, such as poison and indigestible food for the dog or harmful to their health, such as onions, chocolate or some plants, such as rhododendron.

Intestinal parasites They produce digestive problems in the dog, which carry the typical symptoms of gastroenteritis, such as vomiting and diarrhea. Therefore, the internal deworming of the can is essential to avoid this type of problem.

Dog food allergies, such as gluten intolerance, which contain cereals such as barley, rye or oats, is another cause that can trigger the symptoms of gastroenteritis.

Cold It can become the trigger of a gastroenteritis due to lower defenses. The veterinarian Ángel Suela, explains the cause: "When temperatures are very low for the dog, your body provides blood to vital body areas, such as the brain, but the stomach is devoid of it, so it affects the quality of the digestive process. " This can trigger gastroenteritis.

Ingestion of objects Obstructing the intestine can cause vomiting, in order to expel the foreign body as a spontaneous defense mechanism.

Gastroenteritis of the dog: signs

Gastroenteritis in dogs can mask other problems, such as food intolerances

The symptoms of dog gastroenteritis vary depending on the cause of this pathology. However, the most common, according to María Victoria Acha, veterinarian, are vomiting, diarrhea, abdominal pain, fever and depression.

Keep in mind that dog gastroenteritis involves inflammation of the stomach and intestine, so these two symptoms also occur during the pathology, either jointly or independently.

Canine gastroenteritis: three guidelines to prevent it

Certain habits of life in the dog help to prevent the onset of gastroenteritis, including:

A proper diet to meet the nutritional needs of the dog. Ingestion of other products, such as food remains of their owners, can cause digestive problems of the dog, which result in vomiting and diarrhea.

Healthy living habits, such as the daily physical exercise of can, help prevent the onset of gastroenteritis.

Vaccination It is the way that the dog is immunized against diseases such as parvovirus, which cause digestive problems that lead to vomiting and diarrhea.

Dog gastroenteritis, treatment

The treatment of gastroenteritis in dogs depends on the symptoms and the causes that cause it. According to veterinarian Ángel Suela, "the usual thing is fasting until vomiting stops and then soft diet with yogurt and white rice, for a few days. "

However, there may be cases when vomiting does not stop and serum administration is required.

Water intake should be interrupted if the dog vomits often. Liquid consumption can be resumed when regurgitation ceases. In any case, according to veterinarian María Victoria Acha, "the fact that the dog vomits or makes liquid stools a couple of times is not an alarming situation." Yes it will be when he does it often and the dog has other symptoms such as fever or despondency.

Vomiting and diarrhea

To explain why a dog vomits and has diarrhea, it is usual to focus on his digestive system, since the most common causes of this disorder have their origin in a gastrointestinal dysfunction that, therefore, will be able to affect the stomach, the small intestine or the large intestine, which will produce some variations in the appearance of vomiting or diarrhea.

Must distinguish between vomiting and regurgitationWell, the first one, the one that concerns us, is the one that is produced with effort, so we will see abdominal movements and sounds, while in the regurgitation the food or the liquid comes out alone. We must also know that we will understand diarrhea frequent and liquid bowel movements. In addition, we can distinguish the presence of blood. In feces, fresh blood is called hematochezia, while digested blood, which will appear in a dark color, will be called mane.

We must pay attention to all these data to, where appropriate, transmit all the information to our veterinarian to reach the diagnosis and, consequently, to the treatment. That our dog vomits in a timely manner or even has diarrhea without presenting more symptoms and keeping his mood intact is not worrying, but if these episodes they are repeated in a short period of time or occur on a recurring basis for weeks or months, it is a reason for veterinary consultation, as if our dog also showed other symptoms.

The main causes of vomiting and diarrhea

Watching our dog we will have the information we have mentioned to communicate to our veterinarian. With all this, the examination of our dog and the tests that it considers pertinent, our veterinarian will discriminate between the very diverse causes that explain why our dog vomits and has diarrhea. The most common are the following:

  • Infections: both those caused by bacteria, viruses or protozoa, produce vomiting and diarrhea and should be treated by a veterinarian.
  • Indigestion: Dogs have a tendency to overeat, including questionable products such as remains of human consumption or garbage and, although their stomach is prepared for some of these "edibles", it is not strange that they end up causing diarrhea and vomiting that usually remit spontaneously.
  • Food intolerances or allergies: In these cases we will see vomiting and diarrhea chronically, in addition to other more frequent symptoms such as itching. It requires veterinary follow-up, allergy testing for dogs and the implementation of a hypoallergenic diet.
  • Medicines: Some drugs produce digestive disorders that result in diarrhea and vomiting. We must inform our veterinarian if our dog is being medicated, as well as provide the name of the medication and its dose. It will be necessary to suspend or change the treatment.
  • Underlying diseases: sometimes, there are disorders, such as kidney disease, which among the consequences they cause in the body include vomiting and diarrhea. They are usually detected in a blood test and this symptom will remit depending on how we can control the disease behind.
  • Obstructions: Because of the gluttonous nature of dogs, it is not uncommon for them to eat objects such as bones or toys that produce an obstruction at some point in the digestive system. On occasions when the object can cause damage and it is not feasible to leave alone, it is necessary to resort to surgical intervention.
  • Intoxications: the ingestion of some products can cause a picture of poisoning whose symptoms can include vomiting and diarrhea. They are usually veterinary emergencies with danger to the dog's life.
  • Parasites: in very severe cases of parasitosis or when it occurs in especially vulnerable animals, vomiting and, above all, diarrhea can be observed. The veterinarian, examining the feces, will be able to determine the type of parasite we are facing and administer the appropriate dewormer. At this point it is important to highlight the relevance of establishing an adequate deworming schedule.
  • Stress: in cases of very serious stress or when this is prolonged over time, the dog may have vomiting and diarrhea and will need the help of a professional.

Given the number of possible causes for vomiting and diarrhea in dogs, we will look, in the following sections, at three specific situations as an example.

My dog ​​vomits and has bloody diarrhea

We have seen how blood can appear in the feces in fresh (hemactechial) or digested (mane) form. This aspect helps us to locate the place of origin of it, which will facilitate explaining why our dog vomits and has diarrhea, in this case, with blood.

Fresh we will see it in conditions of the lower part of the digestive system (thick, rectum and anus intenstino), while, if it is digested, it will come from the stomach, small intestine and even respiratory tract that ends in the digestive system by swallowing.

The presence, also, of vomiting, guides us to diagnose a gastrointestinal disorder. In addition, we must see if our dog has other symptoms or, on the contrary, keeps the mood. It will be our veterinarian who has to determine the exact cause among all the possible ones to be able to start the appropriate treatment.

My dog ​​vomits, has diarrhea and does not eat

Vomiting, diarrhea and anorexia, that is, lack of appetite, describe the typical picture of the gastrointestinal disorders. It is easy to understand that, with "tummy ache" our dog does not want to eat. As we have seen, it can be a punctual situation that is not serious caused by, for example, a binge.

These mild cases remit spontaneously In a few hours and only if the dog gets worse or the picture does not stop should we go to our veterinarian to ask why our dog vomits and has diarrhea. During these episodes we should not offer water or food to our dog since, if he is vomiting and eats or drinks, he will vomit everything we give him.

Once a few hours have passed, we can offer you a little (little!) Of water to give you only a couple of drinks. If after half an hour you have not vomited, it means that you tolerate it and we can give it a little more. In these mild cases the dog does not usually become dehydrated. In a couple of hours without vomiting or diarrhea we can offer you food. If the episode has been very mild this meal may be yours, but in a small amount, like a handful, to see if your body accepts it well.

When there has been vomiting for one hour it is better to restart the feeding with a special diet, more digestive, such as those found in veterinary clinics. We can also give you some cooked rice, ham or chicken, without salt or sauces, or plain yogurt without sugar. Once the episode is resolved, prevention is essential for cases of diarrhea and vomiting that we can avoid, such as those caused by eating too much or inadequate food.

We can follow the following recommendations:

  • Avoid the access of our dog to potentially toxic substances such as detergents or insecticides but, also, to human food, as some foods are not suitable for dogs to consume, or garbage. We must also avoid playing with potentially dangerous objects that could be swallowed. Also discover 10 common things at home that can kill your cat.
  • Accustom it to your food and that it is of quality, in the dose recommended by the manufacturer.
  • Follow the schedule of vaccinations and deworming recommended by our veterinarian as we will avoid some serious infections caused by viruses and also the negative effect of intestinal parasites.
  • Never medicate our dog without a veterinary prescription. Even the most common drugs in human medicine can be even deadly for a dog since they do not metabolize them just like the human organism.
  • Offer adequate life habits that avoid stress.
  • Go to the vet when vomiting and / or diarrhea contain blood and do not remit or the dog has more symptoms. In addition, from approximately 7 years of age it is recommended that our dog pass an annual veterinary review in which at least a blood test is performed. In it it is possible to detect diseases in early stages, likely to cause vomiting and diarrhea.

My puppy vomits and has diarrhea

Finally, we address in this section the particular situation of the puppies, for their special vulnerability. The causes that cause gatrointestinal disorders in them are going to be fundamentally the same as those that explain why an adult dog vomits and has diarrhea. The peculiarity is that puppies, especially younger ones, can dehydrate easily and, in addition, due to the immaturity of their immune system, they are more prone to diseases and parasites causing them more serious damage than those that can cause an adult dog.

Therefore it is necessary to be scrupulous with compliance with the schedule of deworming and vaccines, safety measures and, in this case, when vomiting and diarrhea occur, we should contact our veterinarian, especially when these fluids appear bloody, because they can indicate the presence of canine parvovirosis, viral disease life threatening It is characterized by vomiting and profuse diarrhea with bloody appearance.

This article is purely informative, at we have no power to prescribe veterinary treatments or make any kind of diagnosis. We invite you to take your pet to the veterinarian in case he presents any type of condition or discomfort.

If you want to read more articles similar to Why does my dog ​​vomit and have diarrhea?, we recommend you go to our Other health problems section.

What caused my dog ​​to vomit?

Vomiting of a dog can cause viral or bacterial infections, parasitic infections (such as worms), food allergies and intolerances, toxic foods or non-digestible elements. The first three will produce chronic vomiting and diarrhea, and it will be convenient to take your dog to the veterinarian as soon as possible.

The last two - toxic foods and non-digestible elements - are due to the fact that your dog has eaten something that it shouldn't have, or that it has felt bad. If this is the case, the problem can be treated at home.

How do I treat dogs with vomiting without spending a fortune?

There are several remedies for dogs with vomiting that can be used to cure gastroenteritis or indigestion and that can be found at home:

  • If something has gone wrong, it is best to help him expel it and not contribute more things in the stomach. Do not give your dog anything to eat in 12 hours and then start giving him the eighth part of his usual food and, if he does not refuse it, gradually increase the amount with each meal for two or three days until he recovers his amount habitual.
  • Abundant water, but in a controlled manner every hour. With vomiting or diarrhea you lose a lot of fluid and you have to replace it. If you do not swallow it well, one way of giving it water is through ice cubes, which will also satisfy the desire to chew.
  • Isotonic or carbonated drinks can be used to replenish liquids which, in addition, provide sugars and isotopes necessary for the organism and that help the recovery of the animal. It is better to consult with your veterinarian as to the doses to be ingested.
  • Yogurt. Dogs, like humans, have benign bacteria in the small intestine that help with digestion. With severe diarrhea and vomiting, these bacteria are dragged and lost. Yogurt helps replenish those bacteria.
  • Avoid human food at all costs (except yogurt). If your dog is not well in your stomach, it will cost you more to digest these foods, even if you take them without problems when you are well.
  • Homeopathic remedies such as licorice, chamomile or other infusion

If after applying these remedies your dog does not improve, or gets worse, you should take your dog to the veterinarian without delay, since it may be an infection, an allergy or it may have swallowed something indigestible that has "stuck".

And so that it doesn't happen again?

Although everything in this life has a cure, prevention is always better than cure. In this sense, if you want to prevent your dog from vomiting - or having them again - caused by indigestion, It is best to ensure that your dog has a proper diet, with dog food, you should not eat the grass of the park, and it can be toxic due to pesticides.

Likewise, you have to be careful with the food for humans that is given to the dog. It should be noted that this is not bad in itself, as the dogs have been eating the leftovers from the table on the farms for centuries and nothing has happened, but if they get used to eating something at home, then it is found by the park or in the trash, you will eat it even if it is in poor condition.

On the other hand, if you have healthy living habits, you are clean, you go for a walk frequently, you exercise, play, eat well, and you are vaccinated regularly, vomiting caused by indigestion will be unlikely.

Diarrhea and vomiting at the same time

In order to explain why a dog has vomiting and diarrhea, the most common is that we focus on the digestive system, because the most common causes of this type of disorder usually originate from a gastrointestinal problem, which in this way has the ability to affect the stomach, the large intestine or also the small intestine, which causes certain variations in the appearance that vomit usually has or in its difference diarrhea.

It is necessary that we can find differences between vomiting and regurgitation, since in the first case it is when an effort occurs and we observe movements in the abdomen area, while on the other hand when a regurgitation occurs the food or also the liquid comes out easily.

In this way, it is important to understand that diarrhea is those stools that happen very frequently and are quite liquid, which in turn can easily differentiate some trace of blood. When blood is seen in the stool, it is called hematocheziaMeanwhile, the one that has been digested, which usually has a darker tone, is called mane.

It is important that we are very attentive to each of these characteristics, since when the time comes we must give all the necessary information to the veterinarian so that he can give a diagnosis, and then administer the correct treatment.

The fact that our pet vomits in a timely manner or also when he has diarrhea without the need to present other symptoms and having the possibility of keeping his mood intact, It's not something we have to worry about, but when these episodes occur repeatedly in a fairly short period of time or usually occur repeatedly in a few weeks or months, it is a reason to take our dog in front of a veterinarian, just like when it shows any other symptoms besides of those we have explained.

The main causes of vomiting and diarrhea

With the necessary information, the necessary exams and each of the tests that are considered pertinent, the veterinarian is the one who can determine among the large number of different causes that can explain the appearance of vomiting and diarrhea. However, we can mention the most common:

My dog ​​throws up, has diarrhea and doesn't want to eat

The disease that is usually associated with a case of diarrhea with vomiting most often is that of parvovirus. The parvo virus, as such, has no cure. It is not a bacterium so it is not eliminated with antibiotics or with home remedies. Parvovirus usually lodges in the intestines of your colleague causing both vomit and diarrhea.

What the veterinarian will do is diagnose it, prevent future infections that the parvo virus usually causes and for which it will be necessary to apply antibiotics, providing serum and nutrients so that it does not faint and giving you all the energy to fight this fearsome virus. Luckily, if caught in time, it can be eliminated.

The best prevention for parvovirus is vaccination, but remember that this vaccine has to be reviewed by your veterinarian and that, like the flu, this virus mutates so it can be contracted even when vaccinated.

What can be given to a dog with diarrhea and vomiting?

If you only have diarrhea or only vomit, and always depending on the color of the vomit or feces we are talking about, we can try to relieve your stomach with a 24-hour cleaning process. If you have eaten poop or something that has sat badly, you may vomit it or try it, having arcades.

Vomiting in dogs occurs in a more natural way than in humans, because by putting more things in their mouths to recognize their surroundings they tend to do so more frequently. They can also spit a yellowish mass if they have not eaten for a long time, as it is some bile that is expelled for having an empty stomach.

These two cases do not have to worry if they occur in isolation, you can put your query to one of our online veterinarians and discover how to pamper your colleague so that he does not do it again. In the case of diarrhea, taking care of your diet and making you not eat for a day, with fresh water by your side and then giving you a nutrient-rich diet, it will also improve. You can give all this if it is one thing or another, but if both situations occur at the same time, you will be wasting valuable time trying to cure it at home.


When dogs usually have a tendency to overeat, which also includes food or products that are found in the remains left by humans in their consumption or in the garbage and although the stomach of a dog is prepared to process certain edible components, it is quite common that end up causing diarrhea as well as vomiting that usually decreases spontaneously.

Food allergies or intolerances

In this type of cases we observe the presence of vomiting as well as chronic diarrhea, apart from being accompanied by some other symptoms, such as itching.

Is specialist follow-up is necessary, that all necessary tests for allergies in dogs be done and that a diet that is hypoallergenic be implemented.


Certain medications cause digestion disorders that can cause diarrhea as well as vomiting. It is important to indicate all the necessary information to our veterinarian when our dog is being medicated, just like we have to give the name of the drug as well as the dose.

Underlying diseases

In certain cases, there are disorders such as some renal disease, which shows as part of its consequences in the body the presence of vomiting and diarrhea.

As usual are detected through some blood test and each of these symptoms decreases taking into account the way in which the disease is controlled.

For obstructions

When dogs are gluttonous, it is quite common for them to eat an object, such as bones or a toy that reaches cause some obstruction in some part of the digestive system. In certain cases where this object causes damage and it is not recommended that it leave itself, the only way to extract it is through surgery.


Eating some food can lead to poisoning where main symptoms are diarrhea and also vomiting. These types of problems are usually veterinary emergencies, which also endanger the life of our pet.

When the cases of parasites are too severe or when this occurs in those animals that are most vulnerable, it is possible to observe vomiting and especially diarrhea. The specialist examining a stool sample, It has the ability to determine what kind of parasite is causing the problem and therefore, the indicated medication will be administered.

When we meet at this point, it is very important to point out the opportunity to be able to set a schedule for deworming properly.

Vomiting and bloody diarrhea

As we have already explained, blood in the stool may appear to be fresh or digested and depending on the case, it receives a different name. This is one of the factors that can help us know the reason for this, which makes it much easier to explain vomiting and bloody diarrhea.

When the blood is fresh it means that we are talking about a condition in the internal part of the digestive system, but if it has been digested, it is most likely to come from the stomach, small intestine or even the airways that then end up inside the digestive system by swallowing.

On the other hand, the presence of vomiting is a signal that indicates that in the same way it is a gastrointestinal disorder.