What to Do If Your Cat Vomits White Foam

Posted by Christy Caplan
Sick Cat

A cat throwing up white foam may need a vet visit to determine why this GI irritation is happening.

Experts at Senior Cat Wellness tell us that when your cat throws up cat foam there are a variety of reasons.

"White foam usually occurs because the cat's stomach or intestines have become inflamed. Furballs, parasites, and food allergies are common causes of inflammation. Occasionally, foamy vomit is linked to other organs, such as the pancreas (pancreatitis)."

With that in mind, sometimes your cat will vomit but it's not normal for them to vomit frequently. Some hair will inevitably end up in your cat's stomach when they groom themselves but if too much collects there their stomach will become inflamed.

What are the top reasons your cat will vomit white foam? Here are five that come up often and the issues your vet will need to rule out. Also, when you're taking notes about the consistency of your cat's vomit for your vet be sure to differentiate between white foam, white liquid, and white mucus.


Your cat can sometimes eat too fast, overeat or run off too quickly after a meal. It's very possible your cat will run away from its bowl if they don't feel comfortable or safe where their feeding bowls are located.

Multiple cats need more than one bowl! Some cats don't want to be bullied while eating!

Obstruction in the GI tract (e.x. hairballs) 

Best Vet Care explains that felines have the habit of swallowing hairs that results in hairball problems which causes them to throw up white foam. Some of the symptoms include constipation and reduced appetite.

Hairballs can call GI obstruction too!

Excess eating

This can happen to kittens. If your cat is young and she does not know when to stop eating her kibble, vomiting up white foam is the best way for her to relieve herself. Don't worry if this is the case. However, with all kittens, if this vomiting persists or if you witness "speed" eating then you'll need to use a puzzle toy to slow her down. 


This is a true emergency and typically accompanied with other symptoms like diarrhea. You always hear about this condition around the holidays as it can happen when your cat is fed table scraps. It can also be prevalent with other diseases, such as gastrointestinal disease, liver disease, and diabetes. 


Some younger kittens haven't been dewormed when you bring them home. The combination of diarrhea and vomit consisting of white foam could be the result of a parasitic infection. Your vet will need to check a stool sample.

If you notice your cat has been vomiting for more than 24 hours you need to make an appointment to see you vet. Also, diarrhea and vomiting at the same time is an emergency. Don't hesitate to get your cat in their carrier and head to the emergency vet if you suspect breathing difficulties.

Small meals and larger kibble might be the answer and your vet will advise you on how to prevent this from happening in the future.

Always watch out for weight loss, loss of appetite, undigested food, lethargic behavior, gagging, stomach upset, and overeating, as these are all common reasons for vomiting foam. Cat owners should contact their vet if they think their cat is vomiting frequently. Gastritis is another cause of cat vomiting and can be very serious.

Have you ever needed to rush your cat to the vet for throwing up? Please leave us a comment below. 

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What to Do If Your Cat Vomits White Foam