By Amanda Foreman, DVM and MPH Candidate
Educational note:
This article provides general information only and does not diagnose or treat illness. Please contact your veterinarian for guidance specific to your pet.
Why Pets Vomit
Vomiting is one of the most common reasons dogs and cats visit their veterinarian [1,2]. It is a normal protective reflex that can occur after minor stomach irritation, but it can also be a sign of a more serious problem. Knowing when vomiting is mild and when it requires veterinary attention helps keep pets safe and comfortable.
Common Causes of Vomiting
Short-term or mild causes
- Dietary indiscretion such as getting into the trash
- Sudden diet change or rich table scraps
- Eating grass or spoiled food
- Motion sickness
- Hairballs in cats
- Empty stomach irritation (bilious vomiting syndrome)
More serious causes
- Toxins including chocolate, grapes, onions, medications, lilies, and cleaning products
- Foreign body obstruction such as toys, bones, string, or clothing
- Pancreatitis or liver disease
- Kidney disease or diabetic ketoacidosis [1,2,7]
- Infectious diseases such as parvovirus or leptospirosis
- Hyperthyroidism in older cats
- Gastrointestinal ulcers or tumors [7]
- More!
Vomiting vs Regurgitation
These two processes look similar but come from different parts of the body and have various causes [3].
Vomiting
- Active process with retching or abdominal effort
- Often contains bile or digested food
- May be preceded by drooling or nausea
- Caused by GI, metabolic, or systemic disease
Regurgitation
- Passive process with no retching
- Often undigested food, sometimes tubular in shape
- Occurs soon after eating
- Associated with esophageal motility or structural issues
If you are unsure which one you are seeing, please record a video to show your veterinarian.
When You Should Call Your Veterinarian
Seek veterinary care promptly if your pet:
- Vomits more than once in twenty-four hours
- Cannot keep water or food down
- Vomits blood, which may appear bright red or coffee-ground
- Shows abdominal pain, bloating, or distress
- Becomes weak, pale, or lethargic
- Is a puppy, kitten, or senior pet
- Has diabetes, kidney disease, liver disease, or gastrointestinal illness [1,2]
- May have eaten something toxic or indigestible
Vomiting can cause dehydration quickly, especially in cats and smaller animals. When in doubt, it is always safer to call your veterinarian.
Home Care for Mild, Short-Term Vomiting
If your veterinarian confirms that the vomiting is mild and uncomplicated, supportive care may help settle the stomach [1,6].
Short rest from food
- Withhold food for eight to twelve hours while still offering small sips of water.
- Then reintroduce a bland diet such as boiled chicken or turkey with rice in small, frequent amounts.
Hydration
- You can offer fresh water, ice chips, or a small amount of low-sodium broth.
- Watch for dehydration, such as dry gums or slow skin recoil.
Feeding adjustments
- Some pets vomit yellow fluid early in the morning because their stomach have been empty too long. Offering a small bedtime snack or dividing the normal daily food portion into three smaller meals can help reduce bile-related vomiting.
Stress management
- Stress can worsen stomach sensitivity in both dogs and cats [5]. Create a calm environment and keep routines consistent during recovery.
Supplements and Vomiting
There is no single supplement that reliably stops vomiting in all pets. Vomiting can occur for many different reasons, and most of those causes require diagnosis and targeted treatment rather than over-the-counter products. While GI protectants, probiotics, or calming supplements may offer mild support in certain situations, they do not treat vomiting directly. A supplement is only helpful when it supports a specific, usually mild, underlying cause, and many common causes of vomiting, such as pancreatitis, kidney disease, diabetes, liver disease, toxin exposure, gastrointestinal obstruction, or systemic illness, will not necessarily improve with supplements alone [1,2,7]. Given that vomiting can have many possible causes, many of which are not related to the stomach itself, it is always safest to speak with your veterinarian before starting any supplement when your pet is vomiting.
Products and Dietary Support
If your veterinarian recommends supportive care, the following products may help maintain gastrointestinal comfort or support mild causes of stomach upset:
- Purina FortiFlora, which provides probiotics supporting gut flora [8,9]
- Bernie’s Perfect Poop, which offers prebiotics, probiotics, and fiber
- Propectalin, which contains kaolin, pectin, and probiotics for mild GI irritation
- Veterinary gastrointestinal diets such as Hill’s i/d, Purina EN, or Royal Canin Gastrointestinal Low Fat for pets with sensitive stomachs [6]
- Hairball control diets or lubricants for cats who vomit due to hair accumulation
These products do not cure vomiting but may help in mild or specific cases under veterinary guidance.
When Vomiting Might Look Like Something Else
Some conditions that may resemble vomiting include:
- Coughing or gagging
- Reverse sneezing
- Hairball episodes in cats
- Regurgitation instead of true vomiting
If your cat has hairballs more than twice per month, this may indicate an underlying gastrointestinal or skin problem [4].
Preventing Future Vomiting
- Avoid sudden diet or treat changes
- Keep trash and harmful items out of reach
- Use slow-feed bowls for pets who eat too quickly
- Maintain routine parasite prevention and wellness exams
- Brush cats regularly to reduce hair ingestion
- Feed smaller, more frequent meals if prone to bile vomiting
Final Thoughts
Vomiting can range from simple stomach irritation to a sign of significant disease. Mild cases often resolve with supportive care, but repeated or severe vomiting always deserves a veterinary call. Acting early helps protect your pet’s health and comfort.
Educational note:
This article is for general informational purposes only. It is not a substitute for veterinary evaluation or treatment.
References
- Hall EJ, German AJ. Textbook of Veterinary Internal Medicine. Elsevier. 2020.
- Simpson KW, Jergens AE. Vet Clin North Am Small Anim Pract. 2011.
- Washabau RJ, Day MJ. Canine and Feline Gastroenterology. Elsevier. 2012.
- Pilla R, Suchodolski JS. Front Vet Sci. 2020.
- Barko PC, McMichael MA, Swanson KS, Williams DA. J Vet Intern Med. 2018.
- Marks SL, Laflamme DP. Compend Contin Educ Vet. 2003.
- Twedt DC. Disorders of the stomach. In Textbook of Veterinary Internal Medicine. 2020.
- Bybee SN, Scorza AV, Lappin MR. J Vet Intern Med. 2011.
- Kelley R et al. Front Vet Sci. 2021.