Vomiting in dogs is one of the most common reasons pet owners seek veterinary care. Our practice is no exception and we see multiple cases of vomiting on a weekly basis.
In some cases, vomiting may be caused by mild stomach irritation or something your dog ate, while in other situations it can be a sign of a more serious underlying medical condition. Understanding the possible causes of vomiting, recognizing when veterinary care may be needed, and knowing what symptoms to watch for can help you make informed decisions about your dog’s health.
Medically reviewed by Aaron Stamper, DVM, Head Veterinarian, PetWow
Last medically reviewed: July 2026
Quick Answer:
Dogs may vomit because of dietary indescretion, infections, parasites, stress, toxins, or more serious medical conditions. Occasional vomiting may not always be an emergency, but repeated vomiting, lethargy, or additional symptoms should be evaluated by a veterinarian.
Common Causes of Vomiting in Dogs
Sometimes dogs vomit because of temporary stomach irritation caused by eating too quickly, stress, minor dietary changes, or a mild gastrointestinal upset. In many cases, symptoms may resolve on their own, but persistent vomiting should still be monitored closely.
Dogs are well known for eating things they shouldn’t. Table scraps, spoiled food, garbage, sudden diet changes, or non-food items can all irritate the digestive system and trigger vomiting. Some cases are mild, while others may require veterinary evaluation depending on what was consumed.
Intestinal parasites such as roundworms, hookworms, or giardia can sometimes cause vomiting, diarrhea, weight loss, and digestive discomfort. Puppies are especially vulnerable, which is why routine parasite prevention and fecal testing are important parts of preventative veterinary care.
Some dogs develop sensitivities or allergies to ingredients in their food, which can lead to chronic vomiting, diarrhea, itching, or skin irritation. Identifying food-related issues can sometimes require dietary changes or veterinary guidance.
Bacterial, viral, or gastrointestinal infections can cause vomiting in dogs, especially when accompanied by lethargy, diarrhea, fever, or loss of appetite. Some infections are mild, while others may become serious without prompt treatment.
Dogs occasionally swallow objects that can become lodged in the stomach or intestines. Toys, socks, bones, and other foreign materials may cause vomiting, abdominal pain, loss of appetite, and potentially life-threatening blockages requiring urgent veterinary care.
Certain foods, medications, household chemicals, plants, and toxins can cause vomiting in dogs. Depending on the substance involved, toxic ingestion can quickly become a medical emergency and may require immediate veterinary attention.
Pancreatitis is inflammation of the pancreas and can cause vomiting, abdominal pain, lethargy, and decreased appetite. It is sometimes associated with fatty foods or dietary indiscretion, but can also occur for other reasons. Veterinary evaluation is often recommended when pancreatitis is suspected.
Repeated or ongoing vomiting may sometimes be associated with underlying chronic conditions such as kidney disease, liver disease, hormonal disorders, or gastrointestinal disease. Persistent symptoms should be evaluated to help determine the underlying cause.
When Should You Contact a Veterinarian?
Here are some of the symptoms that should cause you to call your veterinarian, as they could be signs of significant health issues.
- Vomiting Multiple Times
- Blood in the Vomit
- Lethargy
- Refusing Food
- Abdominal Pain
- Signs of Dehydration
- Puppies or Senior Dogs Vomiting
Worried About Your Dog’s Symptoms?
With 2 Northern Kentucky locations and a 7 doctor team, PetWow has been caring for local pets for decades.
If your pet isn’t acting like themselves, our team is here to help.
We can often accommodate same-day appointments — calling is the best way to check availability. ✅
Or Call Now at 859-781-2577
PetWow’s Head Veterinarian, Dr. Aaron Stamper, Talks More on This Subject:
How Veterinarians Diagnose the Cause
Your veterinarian may use one or more of the following methods to diagnose the issue your dog is facing:
Generally, unless a specific issue (such as a blockage) is suspected, your veterinarian will likely start with a physical exam.
From there they may recommend one or more of the following:
- Bloodwork
- An X-ray
- An Ultrasound
- Fecal Testing
Treatment Depends on the Underlying Cause
As with all medical issues, the treatment your vet recommends will depend on the causes they detect.
Here are some likely treatments your vet might recommend to fix the problem:
- Dietary changes
- Medications
- Fluids
- Parasite Treatment
- Surgery (if needed)
How to Help Reduce the Risk of this Happening Again
So how do you limit the risk of your dog vomiting in the future? Let’s be honest, eliminating the risk of your dog vomiting completely is impossible. Dogs often like to eat odd items that can upset their stomachs, and some sicknesses are unavoidable. However, following the below tips can greatly reduce the risk of the more serious (and expensive) issues from occuring.
Here are the top practices to limit the risk of your dog vomiting in the future:
- Don’t feed your dog unsafe table scraps.
- Make sure all toxic items like antifreeze, xylitol, etc. are stored in a place your dog cannot access.
- Keep up with parasite prevention (to avoid parasitic worms in your pets digestive tract).
- Keep your dog’s vaccines up to date, as multiple issues which cause vomiting can be avoided this way.
- We know it sounds biased, because we’re a vet clinic, but regular wellness exams can truly help us identify issues that can lead to vomiting in the future, as well as a host of other problems, before they occur.
Once again, it’s impossible to completely get rid of this risk, but by taking the actions above you can greatly reduce the odds of your dog vomiting in the future.
Need Veterinary Care For Your Dog?
PetWow provides convenient veterinary care, diagnostics, and treatment for pets in both Florence and Highland Heights, KY.
We have a 7 Doctor team with over 100 years of combined experience. We cannot guarantee this, but we often have same-day appointments available – calling is the best way to find out. ✅
Related Pet Health Topics
Here are some other topics you may be interested in:
Related Veterinary Services:
Here are some related services PetWow offers:
Wellness Exams:
Puppy and Kitten Veterinary Visits:
Pet Diagnostics:
Pet Vaccinations:
Parasite Prevention:
Dog Vomiting FAQs
Vomiting may require urgent veterinary attention if it is severe, happens repeatedly, contains blood, or is accompanied by symptoms such as lethargy, abdominal pain, diarrhea, weakness, dehydration, or difficulty breathing. Puppies, senior dogs, and dogs who may have eaten toxins or foreign objects should also be evaluated promptly.
That depends on the situation and severity of the vomiting. In some mild cases, temporarily withholding food for a short period may help the stomach settle before gradually reintroducing bland food. However, persistent vomiting or additional symptoms should be evaluated by a veterinarian before making dietary changes at home.
Yes. Stress and anxiety can sometimes contribute to digestive upset in dogs, including vomiting. Changes in routine, travel, boarding, loud environments, or stressful events may play a role. However, because vomiting can also indicate medical problems, ongoing symptoms should not automatically be assumed to be stress-related.
Occasional vomiting may not always require immediate care, but repeated vomiting, vomiting lasting longer than 24 hours, or vomiting accompanied by other concerning symptoms should be evaluated by a veterinarian. If your dog seems lethargic, refuses food, or appears uncomfortable, it is best to seek veterinary guidance sooner rather than later.
PetWow has been serving Northern Kentucky pets and pet-parents for over 50 years. We are family owned and operated and pride ourselves on providing convenient pet care for all pet-parents who walk through our doors.
Our veterinarians have helped thousands of dogs resolve their vomiting issues and we would be happy to see your pet if they need to be assessed.
About the medical reviewer:
Aaron Stamper, DVM, serves as PetWow’s Head Veterinarian and provides veterinary care to pets throughout Northern Kentucky. Dr. Stamper medically reviewed this page for accuracy and appropriate pet-care guidance.
Dr. Stamper has been practicing veterinary medicine for over 24 years and continues to work as the head surgeon at the PetWow in Highland Heights, KY.