Why is my dog throwing up his food? Is just the food or something else?

Why is my dog throwing up his food? Is just the food or something else?

Seeing our dog vomiting is something that is really worrying. Especially because it is difficult to know if they just felt bad or if something serious is happening to them. Sometimes the feeding is not correct.

When that happens, it is important to determine the causes of the vomiting and the possible solutions. Just like other animals, vomiting in our canine friends is a natural defense mechanism.

However, dogs have a highly developed vomiting center in their brains. This allows them to vomit much more easily than other species.

In this article, we will help you recognize the most common causes of vomiting in dogs, including those related to the animal’s intake and those that combined with other symptoms can indicate a disease.

If you can differentiate it, you’ll be able to determine when to ignore this and when you can look for veterinary attention.

Regurgitation vs. real vomiting

It is important to distinguish between regurgitation (food expelling which is only chopped, but apparently intact) and real vomit. This last usually contains partially digested food and bile fluid.

Regurgitation is a sign that the animal has attempted to swallow something too large or chopped up and it has been stuck in the esophagus. It has no major consequences for the canine health.

Real throw up minutes after eating

Puppies and small breeds usually have a limited stomach space. A common cause is that they’ve eaten too much, or eaten too fast. This can also occur in adult or large breed dogs.

This vomit has partially digested food; the animal makes arcades and expels a small amount of food with traces of bile, but does not repeat in a couple of hours. It is easy to solve by determining certain hours to eat and portions that are appropriate to the size, weight and breed of the animal.

Allergies or intolerance to certain foods

Regular human meals like wheat, salt, pork, fish, meat, fat and sugar can cause intolerance and allergies to your dog. Even the healthiest dogs can vomit sometimes.

They see something and eat it, ignoring whether it’s edible or not. Their body expels it by the same road that it entered.

It happens if you’ve changed the food recently, the dog ate food for humans, or ate something that was not food. The way to avoid it is to provide the right kind of food for him.

Vomit of lawn

This is a vomit of green bile accompanied by leaves or grass. It isn’t known the exact reasons why dogs eat grass sometimes, but eating and vomiting a little may mean that they ate too much grass –or chewed very little and could not process it. This is not a warning sign.

Vomiting from obstruction

Dogs outside our supervision sometimes eat garbage, other dead animals or foreign objects (such as plastic or soap). If something gets stuck in between the mouth and the intestine, the dog’s natural reaction will be to vomit that thing.

Usually, this vomit is isolated from the hour of a meal, and comes accompanied by strong arches to try to eliminate what has been stuck. If your dog breathes with difficulty, doesn’t want to eat or stops defecating, you may need vet assistance.

Vomiting from poisoning

Like the previous point, this happens when the dog ate something that he should not eat, becoming poisoned. His body will try to reject the substance, producing the vomit.

If he throws up and behaves normally after doing so, then the danger has passed. But if he vomits more than once, or show signs of tiredness, lethargy or diarrhea, it is urgent that you see a veterinarian.


This is also a common answer to the question, “why is my dog throwing up his food?”This vomiting is basically a yellowish liquid that comes out after eating.

This is solved by giving the right food, or giving smaller portions, but more often. This should alarm you if it lasts for awhile.

If, after reducing portions or changing the feeding habits, the problem remains, you can also take him to the vet to determine if the feeding is correct. It could become gastritis.

Gastric ulcer

As in humans, gastritis in dogs can lead to an ulcer. This vomiting may (or may not)be from food leftovers. It can be close or far from the feeding hour.

What makes it especially alarming and characteristic is its red or black color, the unmistakable sign of the presence of blood. In this case you must certainly take the dog to the veterinarian immediately to determine the treatment he needs.

Parasites or Virus

Intestinal parasites can cause vomiting in dogs. This vomiting comes accompanied by a dry cough, diarrhea and weight loss.

In this case, it is caused by nematodes such as Ancylostoma and giardia. Their larvae manage to rise up the bloodstream to the lungs and trachea, causing itching or nausea that lead to a frequent coughing from the animal.

Likewise, numerous viruses cause vomiting in dogs. This type of vomiting is always accompanied by other symptoms.

The most common are influenza, parvovirus, distemper and coronavirus. In addition to the vomit, the dog may show a lack of appetite and diarrhea. If you suspect a virus or a parasite, only the veterinarian can help you.

To conclude

There are many answers to the question, “why is my dog throwing up his food?” First, it is good to verify if the type of food you are giving to him is the correct one.

Many times, it is the food itself, and some other times there are some kinds of physical conditions happening with the dog. In the second case, he will require a little more attention.

Be aware of the characteristics of the material that expels, and with this information you can know what the next step is. Check the vet and always monitor the type of food you give to your pal.

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