My Cat Is Vomiting — When Is It Serious?

Occasional vomiting in cats — once or twice a month — is common and often benign. Vomiting that is frequent, projectile, contains blood, or is accompanied by other symptoms is a medical concern that needs veterinary evaluation.

## Common Non-Serious Causes

Hairballs
Cats groom themselves constantly, swallowing loose fur that accumulates in the stomach. Hairball vomiting typically produces a cylindrical mucus-covered clump of fur. It is normal 1–2 times per month but more frequently can indicate a grooming disorder.

Eating Too Fast
Food eaten quickly is often regurgitated within minutes. The vomit looks undigested and the cat seems fine immediately after. Puzzle feeders and slow-feed bowls help.

Dietary Indiscretion
Eating something unusual — grass, a houseplant, a small foreign object — triggers vomiting as a protective reflex.

## Causes That Require Veterinary Evaluation

Inflammatory Bowel Disease (IBD)
Chronic, recurring vomiting — especially in middle-aged to older cats — is the primary symptom of IBD. The cat may still eat but vomits regularly hours after eating.

Foreign Body Obstruction
Cats that ingest string, ribbon, small toys, or hair ties can develop intestinal obstruction. This is an emergency — the vomiting will not resolve on its own and delay increases the risk of perforation.

Kidney or Liver Disease
Both organs regulate toxins in the blood. When they fail, nausea and vomiting are early symptoms, often accompanied by weight loss and increased thirst.

Hyperthyroidism
The most common endocrine disease in older cats. An overactive thyroid causes weight loss, increased appetite, vomiting, and hyperactivity.

Pancreatitis
Often under-diagnosed in cats. Causes nausea, lethargy, and abdominal pain alongside vomiting.

## Warning Signs That Mean Go Now

- Blood in the vomit (red or coffee-ground appearance)
- Vomiting more than 3 times in 24 hours
- Vomiting alongside lethargy, not eating, or hiding
- Suspected foreign body (string hanging from the mouth — never pull it)
- Yellow (bile) vomit in a cat that has not eaten for 24 hours

Log your cat's vomiting frequency, timing relative to meals, and content in Flovvi to give your vet the clearest possible picture.