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Vomiting / GI issues

Has your cat been vomiting more often?

An occasional vomit is often no big deal (like bringing up a hairball). But if vomiting becomes more frequent, or happens alongside other abnormal signs, you should be more alert. **The threshold is clear: if your cat vomits more than once a week, a vet evaluation is recommended.**

Possible medical causes

  • Hairballs: bringing one up every one to two weeks isn't unusual for a healthy cat; rarely, a hairball passes into the intestine and gets stuck, causing a blockage that can be life-threatening
  • Foreign object ingestion: toxic plants, spoiled food, human medications, string/yarn, human foods (chocolate, onions, etc.)
  • Gastrointestinal disease: constipation, inflammatory bowel disease, intestinal parasites, tumors, or obstruction from a foreign object
  • Metabolic disease: diabetes, kidney disease, and hyperthyroidism can all present with vomiting

Possible behavioral causes

  • Vomiting is rarely a purely behavioral issue, but eating too fast or eating while anxious can also cause a cat to bring up food it just ate

Warning signs — see a vet right away

  • **Vomiting more than once a week** (the official threshold — a vet evaluation is warranted once you reach it)
  • Vomiting combined with: lethargy, weakness, decreased appetite, blood in the vomit, or diarrhea at the same time
  • Repeated retching with nothing coming up, or combined with lethargy, not eating for more than a day, or abdominal swelling (possible hairball or foreign-object blockage)
  • Known ingestion of a toxic substance

Initial at-home suggestions

  • Track how often vomiting happens and what comes up (food/hairball/clear liquid/blood)
  • Check your home for anything your cat might swallow — string and yarn need special caution
  • If you suspect a hairball issue, talk to your vet about whether a hairball remedy paste or a high-fiber diet would help
  • Once it reaches "more than once a week" or comes with other warning signs, seek veterinary care early — don't delay by "just watching it"

Related guides

Health GuideHome Environment

Sources: Cornell Feline Health Center. For reference only — please consult a vet.