Why Is Your Cat Suddenly Vomiting?
21 March, 2018
why cat suddenly vomiting

We know that most cats throw up furballs when ingesting their fur and tend to get rid of them right away.  And cats will vomit now and then when they eat their food too quickly or something didn’t agree with them.  But, if your cat vomits more than once, there are many other reasons why your cat is vomiting.

If your cat vomiting is sudden and persistently, take your cat to the vet.  Some other things to look out for that need immediate attention:

Daily vomiting:  If your cat throws up daily, take your cat to the vet.

Diarrhea: Sickness with diarrhea is a combination which quickly leads to dehydration and can become dangerous quickly.

Taking medications:  If your cat is on new medication and is throwing up, she could be having a reaction and your vet should know about it.

Blood in the vomit: At no time is blood in vomitus normal, so see the vet right away.

Pain: If she seems in pain or distressed, see the vet.

There are other reasons that your cat is vomiting, some are more serious than others:

Eating too quickly

A cat who eats too quickly or overeats may end up vomiting. This tends to be problematic in multi-cat homes where cats are fed together and feel like they need to compete for the food bowl. Vomiting can also be caused from an abrupt diet change, such as switching to a new food or supplement.

Consuming something indigestible

When a cat consumes any indigestible substance, such as a houseplant, grass, toilet paper, part of a toy, or even their own fur, their body rejects the material and it is often vomited up in the form of bile.  If you saw your cat ingest something like this and it’s minor, your cat will either throw it up or poop it out.


Internal parasites, such as hookworms, roundworms, tapeworms, and whipworms, can cause a cat to vomit, often excessively.

Poisonous items

When a cat eats something poisonous, their body’s protective mechanisms kick in to get rid of the toxin, usually through vomiting.  Common poisons include certain human foods, certain plants, human medications, insecticides, and certain chemicals.  If you think your cat ate something poisonous, you should head to the vet right away.

Food allergies

Food allergies are common in cats too. A cat who is allergic or intolerant to one or more ingredients in their food may throw up. The most common cat food allergens are beef, fish, eggs, wheat, and milk. Even if your cat has been eating the same food for a long time without any problems, food allergies can still develop.


Bacterial and viral infections, including but salmonella and giardia can lead to vomiting.  Some can be potentially life-threatening so be especially cautious if your cat isn’t vaccinated. In the most serious cases supportive care with intravenous fluids, antibiotics, and anti-sickness medication are required.

Some diseases

Vomiting is a symptom of a number of diseases. Among them are liver failure, kidney disease, irritable bowel disease, gastritis, diabetes, hyperthyroidism, adrenal gland disease, and cancer.

If you are worried about your cat, make sure to see your veterinarian. Under some circumstances vomiting is normal and nothing to worry about, but if in any doubt, always get your cat checked out.

Other related articles:

Essential Oils Can Be Dangerous to Cats

Plants Your Cat Should Avoid

Can Cats Eat Dairy?


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