Why Is My Cat Throwing Up? Here’s Why & What To Do

Much like with dogs, you wouldn’t be the first cat parent to wrestle something out of your buddy’s mouth – especially if it’s something cats shouldn’t be eating. But with all the shenanigans our feline friends get up to, it’s easy to miss the signs they’re sick until they’ve left a magnificent pile of vomit on your favorite couch…and now you’re wondering, Why is my cat throwing up? Here’s why – and what you can do to help them get back to better in no time. (Including figuring out where they’re getting their paws on those “forbidden” snacks or treats – both indoors or outdoors.)

Find out where your cat spends their time.

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Why is my cat throwing up so much?

Now unfortunately, your cat might be throwing up due to a whole bunch of reasons. Including:

• Eating or drinking something off-limits
  Including human foods like nuts, honey, raw food, bones, foreign objects (like toys, strings, or even plants), their own fur, or drinking dirty water.
• Stress & anxiety
  Especially from a change in routine, like moving apartments, a change in diet or medication, traveling, or even bringing home a new pet or baby.
• Infections
  Including from intestinal parasites, inner ear infections, or even bacterial or viral infections.
• Pregnancy
  Like humans, pregnant cats can also suffer morning sickness. This could be a sign yours might be around 4 weeks into pregnancy. So they might vomit more and seem reluctant around mealtimes, but these symptoms shouldn’t last longer than a few weeks.
• Eating outside of their home meals
  Whether that’s from an indoor snack stash from unsupervised kitchen cabinets, fridges, or cupboards, or even from scavenging for food outdoors, or getting fed by your neighbors.

💡A cat GPS tracker can help you figure out what outdoor spots your cat’s been hanging out in the most. (Which may include spots you’d rather they don’t get their paws into and end up eating something horrendous.)

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Other, more serious medical conditions

Now if you’ve accounted for all the previous situations and you’re still wondering, Why is my cat throwing up?, it could be a more serious medical condition. Here are a couple that include vomiting in cats as one of their symptoms:

• Inflammatory bowel disease
• Diabetes
• Liver disease
• UTI
• Pancreatitis
• Cancer
• Hyperthyroidism
• Kidney disease

Which is why vets recommend watching out for how frequently your cat is vomiting and whether they’re showing any signs of sickness besides just throwing up.

Why is my cat throwing up undigested food?

When your cat throws up undigested food, it usually means it just wasn’t in their stomachs long enough to digest properly.⁴ So your vet might refer to it as “regurgitating” rather than vomiting – especially if the food that turns up hasn’t been entirely digested yet. Most often, this might turn up as yellow, orange, brown or even green vomit. Some of the most common reasons include:

• Eating too quickly – or just too much
  A slow feeder can help dispense kibble or treats at more spaced out intervals, so your buddy learns not to gorge themselves too quick.
• Hairballs
  Which might end up mixed up with any food they eat – and come out as vomit that much quicker. Regular grooming can help prevent your cat’s fur from accumulating in their digestive tracts.
• Eating grass
  Which…yes, we know, sounds weird – but is actually pretty normal for cats! Depending on the grass, though, it might end up irritating their digestive tracts and trigger vomiting as a reflex.

• Foreign objects, like cotton, thread, wool, or even small toys that might end up blocking their digestive tracts – and trigger vomiting as a result.
• Food allergies, especially if your cat is sensitive to specific ingredients (like protein.) This might lead to symptoms like vomiting, diarrhea, lethargy, and even skin infections.

💡 Taking a video to show your vet can help them determine whether your cat is regurgitating or vomiting out food. In the latter case, it might be a more serious situation indicating illness.

Why is my cat throwing up white foam? Or clear, foamy liquid?

If your cat is throwing up white foam, it might signal an empty stomach.⁵ Bring your cat to a vet right away if you notice this, as it could signal an emergency. This white foam is most likely a mixture of stomach acid and saliva – either from not eating for too long, or having eaten something they shouldn’t have.

In some cases, your cat might end up throwing up bile on an empty stomach, which might look like yellow vomit. Some of the causes might include:

• Indigestion
• Gastritis, especially if their stomach acid has increased and has inflamed their stomach lining.
• Hairballs
• Irritable bowel syndrome
• Hepatic deficiency
• Parasites
• And other, more serious conditions, like diabetes and pancreatitis

What else to watch out for in your cat’s vomit

• Blood in your cat’s vomit, especially if it’s red or pink. This might occur most commonly from your cat having swallowed a foreign object.⁶
• Black vomit or vomit that looks like coffee grounds. Get in touch with your vet immediately if you notice this, as it might signal a serious problem with your cat’s gastrointestinal tract.
• Mucus, which indicates your cat is regurgitating rather than vomiting.

When should I drop by my vet?

In general, you should drop by your vet for a checkup if your cat has been throwing up 2-3 times in a row.⁷ Keep an eye out for signs like your cat:

• Not eating or drinking for over 12 hours
• Or, on the other hand, drinking a lot of water
• Coughing, hacking, or sneezing
• Not going to the litter box as often as usual (i.e. constipated)
• Going to the litter box way more than usual (or having diarrhea)
• Relieving themselves outside of their litter box
• Vomiting up worms

If a vet has already diagnosed your cat with a previous illness – and they’ve been vomiting continuously – this might count as an emergency. Head to your clinic immediately in these cases. Also, avoid giving your cat any medicine, food, or even water by mouth if they’re vomiting. This might end up worsening the problem instead, especially if you do so without proper veterinary guidance.

What to expect once you’re at your vet’s

Here are some of the tests your vet might run to determine the cause of why your cat is throwing up:

• A physical exam, especially your cat’s mouth (and gums) or their stomachs
• A blood test
• Examining your cat’s urine or feces
• In more serious cases, an X-ray or ultrasound

Come prepared to answer questions like:

• Whether you’ve switched up your cat’s diet or introduced any new medication
• When your cat began throwing up – and how long they’ve been at it
• Any other symptoms your cat’s experiencing, including diarrhea or lethargy
• How long it’s been since your cat’s eaten or drunk anything
• What your cat’s diet is like on the regular (including what treats you feed them, if any)
• Your cat’s wandering habits, i.e., whether they’re an indoor or outdoor cat
• Anything weird you might’ve noticed in your cat’s vomit
• If you have any other pets at home – and whether they’re throwing up as well

What your vet might prescribe

Depending on the cause of your cat throwing up, your vet might recommend:

• A change in diet to bland, easily-digestible foods. Some vet-approved cat food options are specifically designed for cats with sensitive stomachs, so make sure to check with your vet before buying right away.
• Plenty of fluids to help your cat replenish the water they’ve lost through vomiting. (To avoid dehydration down the line.)
• Specific medications to help stop the vomiting. These might include anti-emetic medications, but also antibiotics, probiotics, and deworming pills.

⚠️ Avoid giving your cat any medicine built for us humans. These might contain ingredients that are toxic to cats and might do more harm than good.

Prevent your cat’s digestive distress – with these tips

Once you’re home, make sure to keep your cat on their medication schedule for as long as your vet recommends – even if the vomiting stops and they seem to be doing better. Keep an eye on their symptoms and get in touch with your vet if you notice them persisting.

Besides, it also makes sense to:

• Ensure your cat has access to enough water
  Besides following any change in diet, make sure your cat is drinking enough water as they recover from their vomiting episode. Offer them plenty of cool, shaded areas to keep them safe from the sun.
• Help your cat de-stress
  A relaxing home environment (especially when you aren’t around) can go a long way. A stressed out cat might be less likely to eat and vomit on an empty stomach. So keep them busy with interactive toys like food puzzles or feeders, scratching posts and perches, and a cozy “box-like” spot where they can hide and observe their surroundings.
• Be extra mindful what your cat eats
  Meaning no extra portions or treats outside of their vet-approved diet. It’s also smart to check with your neighbors if anyone’s been feeding your cat extra, so you can avoid someone feeding your cat something toxic or allergy-inducing by accident.

Know everywhere your cat goes

See where they are in real-time, no matter how far they go. Get alerts if they roam too far home. Find out where they’ve been and discover their favorite spots. Let others track with you.

Discover Cat GPS Trackers

And if you’ve liked this post, share it with a friend or a loved one – and let’s help build a safer, kinder world for our furry friends together.