Cats throw up. It's practically a defining feature of cat ownership. But while occasional vomiting is often harmless, frequent or severe episodes can signal something more serious.
Regurgitation vs. Vomiting
These look similar but are actually different:
- Regurgitation — Food comes back up shortly after eating, usually undigested and tube-shaped. It's passive — your cat doesn't heave. This often points to eating too fast or esophageal issues.
- Vomiting — Active, forceful expulsion involving abdominal contractions. The contents are usually partially digested. This involves the stomach and intestines.
Knowing which one is happening helps your vet narrow down the cause.
Common Causes
Most cat vomiting falls into a few categories:
- Hairballs — The classic. Cats groom constantly and swallow loose fur. Occasional hairball vomiting (once or twice a month) is generally normal, especially in long-haired breeds.
- Eating too fast — Cats who gulp their food often regurgitate it right back. A slow-feeder bowl can fix this almost overnight.
- Food sensitivity or allergy — Some cats react to specific proteins, grains, or additives. If vomiting happens consistently after meals, diet could be the culprit.
- Dietary indiscretion — Ate a rubber band, chewed on a plant, licked something they shouldn't have. Cats are curious and their stomachs sometimes pay the price.
- Gastrointestinal issues — Inflammatory bowel disease (IBD), gastritis, or intestinal parasites can all cause chronic vomiting.
- Systemic illness — Kidney disease, hyperthyroidism, diabetes, and liver problems can all present with vomiting as an early symptom.
When It's an Emergency
Call your vet or go to an emergency clinic if you notice:
- Blood in the vomit — Red or dark brown ("coffee grounds" appearance)
- Repeated vomiting — More than 2-3 times in a single day
- Lethargy or hiding — Your cat is withdrawn, won't eat, or seems weak
- Suspected foreign object — You saw them eat string, a toy, or something unusual
- Vomiting with diarrhea — Both together can lead to rapid dehydration
- Nothing staying down — Not even water, for more than 12 hours
Dehydration is the biggest immediate risk with repeated vomiting, especially in older cats or kittens.
What You Can Do at Home
For occasional, mild vomiting:
- Hairball remedies — Regular brushing and hairball-formula food or treats can reduce frequency.
- Slow feeder — If your cat eats too fast, a puzzle feeder or slow-feed bowl helps.
- Smaller, more frequent meals — Easier on the stomach than two large meals.
- Remove temptations — Keep rubber bands, string, and toxic plants out of reach.
- Track the pattern — Note when vomiting happens, what they ate, and how often. This information is valuable for your vet.
If your cat is throwing up and you're not sure whether it's normal, Mylo can help you sort through what other cat owners have experienced — including breed-specific patterns and what solutions actually worked.