Why Does My Cat Keep Throwing Up? Causes and When to Worry
You walk into the living room and find a fresh wet spot on the rug, with your cat sitting beside it looking completely unbothered. One mess is a cleaning job. A mess every few days is a question mark. This guide is about that question mark, what it means when a cat keeps throwing up, and when to call for help.
The short answer
An occasional throw up in a cat that eats, drinks, and plays normally is usually nothing to fear. Vets at the Cornell Feline Health Center say the picture changes when vomiting happens more often than once a week, or when it comes with tiredness, a poor appetite, blood, or diarrhea. A cat showing any of that should see a veterinarian promptly. So if your cat keeps throwing up week after week, stop guessing and book an appointment.
Below you will find the difference between vomiting and regurgitation, the most common causes of repeated throwing up, the warning signs that mean an emergency, and exactly what to tell your vet when you call.
Vomiting or Regurgitation? The Difference Matters
These two end the same way, in a puddle on your floor. But they start in different places and point to different problems. Knowing which one your cat does saves your vet time and saves you a lot of worry.
What vomiting looks like
Vomiting takes effort. Before it happens, a cat often acts nauseous and may lick its lips, drool, and swallow over and over. Then the belly heaves with strong contractions, and out comes partly digested food, fluid, or froth. VCA Animal Hospitals calls it an active process, and the effort can be hard to watch.
What regurgitation looks like
Regurgitation is the lazy cousin. There is no retching, no warning, and no belly heaving. Food or water slides back up quickly, often right after a meal, and it usually looks barely digested. The food pipe, the esophagus, is usually involved rather than the stomach, per VCA Animal Hospitals. Eating too fast is one of the common triggers. A cat that bolts its dinner and leaves a tidy deposit near the bowl is usually dealing with speed, not sickness.
How to tell your vet which one happened
Video beats any description. VCA veterinarians ask owners to film the episode on a phone. A ten second clip shows whether the cat is vomiting, regurgitating, or coughing, and that changes the whole investigation.
The Occasional Hairball vs Chronic Vomiting
A hairball is not the same as throwing up food, even though both leave through the same door. The Cornell Feline Health Center describes a hairball as a damp, cylinder shaped wad of swallowed fur, moistened by bile. Gross, and usually harmless.
When a hairball is no big deal
Cornell says it is not unusual for a cat to bring up a hairball every week or two without any lasting problems. Long haired cats do it more often. If your cat stays bright, eats well, and plays between episodes, a weekly fur cylinder is usually nothing to lose sleep over.
When hairballs stop being innocent
VCA draws a stricter line. If hairball vomiting happens more than once a month, they say, contact your veterinarian. And there is a quiet danger in the opposite direction. Cornell points out that a hairball which never comes up can move into the intestine and cause a life threatening blockage. So frequent hairballs deserve a checkup, and so does a cat that retches and retches but produces nothing.
Common Reasons a Cat Keeps Throwing Up
The list of causes is long, and that is exactly why guessing is a bad idea. Here is what veterinarians find most often.
Everyday causes
- Eating too fast. Gulpers swallow air along with their food, then bring the meal back up minutes later.
- Hairballs, especially in long haired cats during shedding season.
- A sudden diet change. Cat stomachs like routine, so new food should be swapped in gradually over a week or more.
- Food intolerance or allergy. Some cats react to a specific protein, and a vet guided diet trial is the way to find out. Our guide to cat foods for sensitive stomachs walks through the usual swaps.
Parasites and infections
Internal parasites such as roundworms sit on Cornell's list of frequent causes, and a course of deworming medicine usually sorts them out. Spoiled food, rich table scraps, and bacterial or viral infections can also light up a cat's stomach.
Chronic diseases that hide behind vomiting
This is the part people miss. When a cat throws up on and off for weeks or months, vets start thinking about illness, not just hairballs. The main suspects are these.
- Inflammatory bowel disease, often called IBD. Cornell names it a common disorder in cats, usually treated with a special diet and medication.
- Kidney disease. When kidneys struggle, waste products build up in the blood and the stomach objects.
- Liver disease, which VCA lists among the serious causes of feline vomiting.
- Hyperthyroidism, an overactive thyroid that hits middle aged and older cats. Both Cornell and PetMD list it as a cause of throwing up.
- Diabetes, another Cornell listed cause.
- Growths in the stomach or intestine, benign or cancerous.
None of these announce themselves loudly. Weight loss, extra thirst, a dull coat, or a bigger appetite than usual often ride along with the vomiting.
Foreign objects, string, and toxins
Cats swallow the strangest things. Cornell's list includes paper clips, rubber bands, yarn, and string. String is the scariest of the bunch because it can anchor in the gut and saw through the wall of the intestine. Never pull a string that hangs from your cat's mouth or bottom. Get to a vet instead. As for toxins, Cornell names poisonous plants, antifreeze, chocolate, onions, and human medications. Lilies deserve special fear, because even a small taste can damage a cat's kidneys. If you suspect a toxin, contact your veterinarian or the Pet Poison Helpline right away, and do not wait for symptoms to show up.
Occasional Vomiting vs Patterns That Need a Vet
Same mess, very different meanings. This table is where vets draw the line.
| What you notice | Occasional and usually fine | Concerning, worth a vet call |
|---|---|---|
| How often | Once a month or less | More than once a week, or several times in a row |
| Hairballs | Every week or two, cat otherwise normal | More than once a month, or mixed with food |
| What it looks like | Food or hair, no blood | Blood, dark coffee ground bits, or daily yellow foam |
| Between episodes | Eats, drinks, and plays as usual | Tired, hiding, eating less, losing weight |
| Other signs | None | Diarrhea, extra thirst, more or less urination |
Keep a running note on your phone. Date, time, and a one line description of each pile. A week of honest notes beats a fuzzy memory when the vet asks how often your cat really throws up.
When Vomiting Is an Emergency
Some signs do not wait for a morning appointment.
Emergency signs
Contact your veterinarian or an emergency clinic right away if your cat shows any of these
- Blood in the vomit, fresh red or dark and grainy like coffee grounds
- Several episodes in a row, or repeated vomiting across a whole day
- Retching and heaving with nothing coming up
- A swollen or painful belly, or a cat that cries and flinches when touched there
- Vomiting plus diarrhea, which drains fluids fast
- Sudden weakness, collapse, or a cat that barely moves
- A kitten that keeps throwing up, because small bodies dehydrate quickly
- A known or suspected string, swallowed object, or toxin
- A cat with diabetes, kidney disease, or hyperthyroidism that starts vomiting, since the illness may be flaring
AAHA, the organization that sets standards for animal hospitals, puts repeated vomiting in a short period, especially with blood, on its list of reasons to seek prompt care. PetMD adds a second red line. Vomiting several times and then refusing food and water for 12 hours earns a same day vet visit. And Cornell's Feline Health Center reminds owners that throwing up more than once a week, even without drama, is enough reason for a full workup.
What to Tell Your Vet
You do not need to be a doctor. You need to be a good witness. Have these details ready when you call the clinic.
Describe the pile
How often it happens, what it looked like, food, hair, foam, yellow fluid, or blood, and when it tends to happen, right after meals or on an empty stomach. Photos help. So does a short video of the act itself.
Describe the cat
Whether your cat is still eating and drinking, whether energy and mood are normal, and whether anything changed lately. New food, new treats, a new plant in the living room, a missing hair tie. All of it counts. PetMD says vets ask most of these questions anyway, so arriving with answers moves things faster.
Film it before you clean it. Ten seconds of phone video showing your cat mid episode tells the vet whether it is vomiting, regurgitating, or coughing, which changes the whole investigation. Vets at VCA Animal Hospitals ask for exactly this.
What Not to Do When Your Cat Throws Up
The instinct to help is good. Some of the things people reach for are not.
- Do not give human medication. Painkillers and stomach pills that are safe for people can be poisonous to cats, and Cornell lists human medications among the classic causes of feline poisoning.
- Do not fast your cat on your own. The idea comes from dog advice. Cats are built differently, and a cat that stops eating can develop serious liver trouble. Withholding food is a vet's call, not yours.
- Skip the saucer of milk. Most adult cats handle lactose poorly, and milk can turn a sore stomach into a worse one.
- Never pull string or yarn hanging from either end of your cat. You can tear the intestine without meaning to.
- Hold off on food and water until you have checked with your vet. PetMD advises giving nothing by mouth until you have spoken with a veterinarian, because a cat that keeps throwing up may not keep anything down.
Frequently Asked Questions About Cat Vomiting
Why does my cat throw up every day?
Daily throwing up is a medical red flag, not a habit. It usually points to something ongoing such as inflammatory bowel disease, kidney disease, or a food intolerance. Book a vet visit and bring notes on each episode.
Should I feed my cat after vomiting?
Let the vet decide. Many vets suggest a bland meal in small amounts once the vomiting has stopped, but the timing depends on the cause. Nothing by mouth until you have spoken with a veterinarian is PetMD's advice.
What does it mean when a cat throws up white foam?
White or foamy throw up usually means the stomach was empty, and the pile is mostly saliva, stomach fluid, and swallowed air. A one time episode is often nothing. A daily foam habit can point to ongoing nausea and deserves a vet's opinion.
When is cat vomiting an emergency?
Repeated episodes, blood in the vomit, a painful belly, severe tiredness, vomiting with diarrhea, a known toxin or string, or vomiting in a kitten all mean call now. When in doubt, call your vet or the nearest emergency clinic.
The Bottom Line for Your Cat
Rare vomiting in a bright, hungry, playful cat is usually just life with a cat. VCA puts the comfort line at less than once a month, and Cornell is relaxed about a hairball every week or two. If that describes your cat, watch, note it, and move on.
Throw up more than once a week, for weeks at a stretch, or add other signs on top, and the best next step is a vet visit. Bloodwork, a physical exam, and maybe an ultrasound often pin down the cause in a single appointment. Most of the diseases behind chronic vomiting respond far better when caught early.
So here is the short version. For the owner of a happy cat with the occasional hairball, no action is needed beyond normal grooming and fresh water. Weekly or daily throwing up, on the other hand, deserves a same week vet appointment. And if you are still not sure which group your cat falls into, the table above is the tiebreaker, and your vet has the final word.
Read our guides on hairball prevention and cat foods for sensitive stomachs if you want to cut the odds of the next cleanup, and keep this page close for the warning signs. If anything here worries you, phone your vet today. An extra visit costs less than a missed problem.