Why Is My Dog Throwing Up Undigested Food After Eating?

What You Can Do When Your Dog Throwing Up Undigested Food Hours After Eating?

During his lifespan, your dog will throw up a couple of times and you shouldn’t really panic every time your pooch vomits.

You should also realize that a dog vomiting up is not usually sick or in desperate need of vet care.

But what if your Dog spit up undigested food? Will that need to be a concern?

Okay, we all believe that whatever meal a dog consumes is going down the esophagus and then into the intestinal intestine. So, watching your dog vomiting up undigested food directly after feeding, or 8 hours (or more) after feeding, may be distressing.

But first, what can cause your dog to cough up undigested food? And what is it that you should do?

  1. The Dog Vomits Immediately After Eating

When the dog throws up undigested food shortly after feeding, there are high odds that instead of diarrhea, he might be struggling with regurgitation. So, the distinction between the two is important to consider before you take any action.

When a dog is regurgitating, it appears to be more cooperative to pick up the food. The dog will drop his head in most situations, and quietly spit out the food. The food removed would be undigested, because it never hit the intestine. Some dogs still re-eat the food that has been discarded because it has not been saturated with stomach acids and can therefore be delicious.

Besides, he can drool and behave apprehensively while he is vomiting. The muscles of the dog will relax, and its entire body will tense. You can also see the dog retching to have either partly digested or undigested food along with a white liquid (if the food comes from the stomach) or green liquid (if the food comes from the small intestine). You can hear loud gurgling or moaning sounds from the stomach of the dog, too.

Potential causes

Regurgitation soon after eating can be caused by a wide range of reasons including

Feed so much


Esophageal tightness or inflammation


Foreign Esophageal bodies

Mega-esophagus-a disease in which the esophagus of your dog lacks sound and dilates, making it less effective to move food into the stomach.

  1. The Dog Throws Hours After Feeding

Vomiting partially digested or undigested food several hours after eating suggests an excessive pause in emptying the contents of the stomach into the bowel tract. Many of the most frequent causes of dog vomiting include:

  • Blockage: The dog may have had something eaten that prevents the smooth flow of food. A dog with a blockage problem will cough, suffer stomach pain, defecating problems, and even diarrhea. Table fragments, bones, or debris (stones, feathers, rocks, rubber balls, and other objects) are typical culprits for blockage.
  • Diseases (upset stomach, cancer, diabetes, roundworms, or infections with viruses)
  • Intake of poisonous substances such as antifreeze, household medications, rat poison, pesticides, etc
  • Anxiety, discomfort or feeling excited.
  • Eat unhealthy foods.
  • Problems with motility (could delay digestion times).

What should I do if my dog frequently Vomits?

An isolated, occasional bout of vomiting might not be of concern. However, regular or chronic vomiting, such as colitis, intestinal obstruction, or parvovirus, may be a symptom of a more severe illness. Unless the vomiting of your dog isn’t an isolated occurrence, please immediately get him to the vet for a full evaluation and diagnostic check.

Major FACTS to remember

  • A healthy dog will usually vomit and go about the rest of his day — as if nothing happened. And, if the dog has no other serious symptoms, then he should be fine.
  • If the dog vomits many times a day, blood is in the vomit, or the vomit is followed by extreme bleeding diarrhea, discomfort, fatigue, exhaustion, depression, or lethargy, you need to see a veterinarian, as the dog may suffer from inflammatory bowel disease, stomach ulcers, or other serious conditions. Your dog may have eaten a sharp foreign object, too. You will also be worried if the dog fails to eat or sleep after vomiting more than normal.
  • Chronic vomiting, if not attended to immediately, can lead to serious dietary deficiencies. It may cause dehydration and electrolytic imbalances, for example, which are also associated with tremors, muscle disorders, and other neurological problems.
  • If you think motility issues are the source of vomiting, consider offering the dog a light dog food diet. Canine nutritionists claim that foods produced from high-fiber dogs improve motility by pushing the food forward.

What Can You Do?

If your dog throws food right after eating or a few hours later, there are a number of steps you can take including:

  • The diet changes will fix mild cases of regurgitation or vomiting. Strive to keep food selection for your dog as easy as possible. You should make sure your dog is well dehydrated, too. Many potential dehydration remedies or many health issues resulting from the problem include IV fluids and antibiotics.
  • The most important thing for repeated vomiting is to locate and eliminate the root cause of the problem (your vet will assist with this) and give your dog appropriate fluids/electrolytes and necessary medications to soothe his stomach.
  • One of the easiest ways to avoid congestion in the intestine is to remove the initial problem — not letting your dog eat foreign items. So be sure to closely watch your dog (especially when it is eating or playing in public areas) and keep possible hazards out of reach.
  • There are times where it is best to cause vomiting when your dog ingests a foreign substance so that it does not absorb toxins. There are occasions, however, where this is NOT recommendable. For example, if your dog ingests a sharp object, caustic materials (such as drain cleaners), or if he is unconscious, NEVER attempt to cause vomiting. So, you should always consult your veterinarian before causing your dog to vomit. Hydrogen peroxide is the most common alternative to use when your vet gives a green light.
  • If you decide your dog is vomiting because he eats too much, consider investing in a slow feeder or puzzle feeder. It will make it harder for your dog to eat because it will have to struggle to get to the food. You may also recommend feeding them in different rooms if you have more than one dog, to prevent competition. Eventually, you will feed the dog many tiny meals a day.
  • If your dog is healed and diarrhea ceases, allocate him to small quantities of low-fat foods—3 to 6 times a day. Increase the amount of food and gradually decrease the frequency of feeding as you move to a normal diet. And if you’d been told by your vet to withhold water, suggest slowly reintroducing small quantities.


There are many factors that can cause your dog to vomit or regurgitate food instantly or hours after feeding. Know when vomiting or regurgitation is not natural, and let your veterinarian help you know the next course of action. Most importantly, always try to identify explicitly the type of vomit you see in your dog and its behavior because it can make a huge difference.

Finally, it is important to note that if the source of vomiting turns out to be an intestinal blockage, the doctor will need to conduct a thorough examination and determine the location of the blockage using ultrasound or x-rays. And your pooch may need surgery to clear the blockage.

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