What normal actually looks like
A healthy cat grooms loose fur from her coat, swallows most of it, and passes the majority in her stool without you ever knowing. Now and then the stomach gathers a portion into a compact, tube-shaped bundle and she brings it up with a few minutes of crouching, hacking, and retching. The episode is infrequent — roughly every week or two in a heavy groomer, less in most cats — the hairball itself contains fur, not a meal, and within the hour she is eating, playing, and using the litter box as usual. That pattern, however dramatic it sounds, is grooming working as designed.
Frequency and emptiness: the first problem signs
Worry when the pattern changes in either direction. Retching several times a week, daily hacking, or long sessions that produce nothing at all are not an escalation of normal — a cat who retches repeatedly without bringing up fur may be coughing, struggling with a throat or chest problem, or trying to move something that will not move. Vomiting that brings up food, yellow fluid, or foam repeatedly belongs in the same category. Keep count rather than relying on impressions: note each episode on your phone with the date, what came up, and what she did next, because that log is the difference between a vague concern and a diagnosable pattern.
The body signs that raise the stakes
Treat appetite and energy as the real dividing line. A cat who skips meals after retching, who leaves the room and hides, who grooms frantically at one spot or stops grooming altogether, or whose belly looks swollen or tender when she is picked up has moved beyond hairball territory. Check the litter box with equal care: hard, dry stools threaded with fur suggest hair is straining her digestion, while no stool at all alongside retching suggests it may not be moving through. Weight loss over weeks, dull coat, and new drooling round out the picture of a cat who needs examining.
Why vets take unproductive retching seriously
Hair itself rarely obstructs a healthy gut, but a dense mass can occasionally lodge, and — more importantly — frequent retching is a shared symptom. Stomach and intestinal inflammation, food reactions, parasites, swallowed string or other objects, and even heart or respiratory disease can all present as a cat who hacks and produces nothing. That is why a vet faced with repeated episodes will examine her abdomen, ask about string, ribbon, and small toys in the house, and may recommend imaging or blood work rather than simply suggesting a hairball remedy. String in particular is an emergency if you see it protruding — never pull it.
What to do at home, and when to book
For the genuinely occasional hairball, daily gentle brushing removes loose fur before she swallows it, fresh water encourages drinking, and regular meals keep the gut moving. Do not add oils, pastes, or home remedies repeatedly to mask a worsening pattern — if you are reaching for a remedy more than occasionally, the pattern itself is the appointment reason. Book promptly for retching on consecutive days, any retching paired with appetite loss or lethargy, a swollen abdomen, or no stool. Go the same day for repeated vomiting with weakness, drooling, or a visible string. Bring your episode log and a photo of a typical hairball; both help more than a description.
Keeping a dated log of her episodes, appetite, and litter habits in her KinsLe Pet Passport gives the vet a pattern to judge, not just a single worried visit.