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Cat vomiting and diarrhea: when it's hairballs vs an emergency
Digestive issues top feline vet visits — know what's normal, what's urgent, and what to tell your veterinarian.
5 min read
Educational information only — not veterinary medical advice. Always consult a licensed veterinarian for diagnosis and treatment.
Occasional hairballs are common in long-haired cats. Repeated vomiting, blood, lethargy, or diarrhea lasting more than 24 hours needs veterinary attention.
Chronic digestive disease (IBD, food sensitivity) can look like "a sensitive stomach" for months before diagnosis.
Go to the vet urgently if you see
- Blood in vomit or stool
- Repeated vomiting in one day or inability to keep water down
- Lethargy, hiding, or not eating for 24+ hours
- Straining to defecate with little output (possible blockage)
- Weight loss or bloated painful abdomen
Helpful info to bring to the appointment
Note diet brand, treats, recent changes, parasite prevention, and photos of stool consistency. A 48-hour symptom log beats a vague "he's been sick."
Common questions
- Is wet food better for cats with sensitive stomachs?
- Sometimes — higher moisture and different protein levels help individual cats. Your vet may recommend a digestibility trial with a specific prescription or hydrolyzed diet.