A cat that leaves kibble on the floor is not being messy. By 11 years most cats have some periodontal disease, and a large share have tooth resorption, where the tooth dissolves from the root up while the crown still looks normal. Pain changes how a cat eats before it changes how much: 5 or more pieces dropped per meal, chewing on 1 side, a sudden preference for wet food. Count the signs for 2 weeks, then book the exam; waiting 2 months costs weight and money.
Five things to watch at the bowl
Watch 2 meals a day for 2 minutes each, from 2 metres away, without talking. A cat that is watched stops eating, and the data disappears with it. Score each of the 5 signs as present or absent, and write the date next to it.
| Sign | What it looks like | Threshold that matters | Check how often | Act within |
|---|---|---|---|---|
| Chewing on 1 side | head tilts 20 to 30 degrees, food falls from the other side | 3 meals in a row | 2 min daily | 14 days |
| Dropped kibble | hard pieces on the floor or in the bowl edge | 5 pieces a meal, 2 meals running | 1 meal daily | 14 days |
| Wet food only | refuses dry, eats pate in 1 go | 3 days of refusal | 2 min daily | 7 days |
| Eating then quitting | 3 or 4 bites, then a head shake or a paw at the mouth | 2 meals out of 3 | 2 min daily | 7 days |
| Drool and breath | wet chin, saliva on the bedding, smell from 1 metre | 1 day with drool | 2 min daily | 48 hours |
Why the mouth hurts at 11
Four problems cover most of it. Tooth resorption is the most common cause of dental pain in cats: the dentin is eaten away at the gum line, the crown may snap off, and the tooth becomes a raw stump under the gum. Periodontal disease follows, with 3 mm pockets, mobile teeth, and bone loss. Stomatitis is different and worse: the whole mouth is inflamed, the cat may still eat soft food but cries while grooming. A mass is the fourth, and the one that cannot wait: a 1 cm lump under the tongue or on the gum changes the plan from dental cleaning to biopsy. Only an examination under anesthesia with dental x-rays separates these, because 60 percent of the tooth is below the gum line.
The 10 kibble test
Put 10 pieces of the usual kibble on a dark plate, on the floor, and walk away. Count what is still there after 5 minutes and what ended up beside the plate. A healthy cat leaves 0 to 1. A cat with a sore premolar leaves 3 or 4, and a cat with pain on both sides leaves 5 or more and then gives up on the bowl entirely. Repeat the test 3 days in a row at the same meal, because 1 bad day could be a hairball. The number is the point: 5 pieces out of 10 is a finding you can hand to a vet, and it beats a description.
Wet food preference is data
A cat that refuses kibble and empties a can of pate within 10 minutes has told you two things: the appetite is intact, and the pain is mechanical. That pattern points at teeth, not at nausea or kidney disease. Use it while you wait for the appointment. Warm wet food to 37 C, add 1 to 2 tablespoons of warm water to make it easier to lap, and offer 4 to 5 small meals a day instead of 2 large ones. Do not soak kibble for 3 days and call it solved: soaked kibble still needs chewing and it grows bacteria at room temperature after 30 to 60 minutes.
Weigh weekly, because intake lies
A cat in mouth pain often keeps eating just enough to hold weight for 3 or 4 weeks, then drops fast. Weigh every 7 days to 10 g on the same scale, before the first meal. A drop of 5 percent in 6 months is the standard alarm, and in a cat with a known dental problem, 2 percent in 14 days is enough to move the appointment to this week. Track food volume too: a 4.5 kg cat that falls from 220 kcal a day to 150 kcal is losing 1 to 2 percent of body weight a week even if the bowl looks empty.
How often to look, in one schedule
- Every day: 2 minutes at 1 meal, checking the 5 signs above.
- Every 7 days: weight to 10 g, plus a look at the gums on both sides.
- Every 14 days: the 10 kibble test, and a photo of the bowl aftermath.
- Every 6 months after 10 years: a dental check with the vet, even if the cat eats well.
- Every 12 months: dental x-rays if any sign has appeared in the past year.
Red lines that mean today
Complete refusal for 24 hours, drool soaking the chin and chest, blood in the saliva, swelling over 1 eye or on 1 side of the face, a jaw that will not close, or 3 percent weight loss in 14 days. Any 1 of those is a same-day appointment, not a dental cleaning booked for next month. A cat that has stopped grooming and sits with the head down over the water bowl is also in that group.
Before the appointment
Bring 3 things: the 7 day weight numbers, the kibble test count, and 2 photos of the cat eating. Ask 2 questions in this order: does the cat need dental x-rays, and how many teeth are likely to come out. Extractions are common and most cats eat better within 3 to 7 days, often on the same day. Pain control after dental work is a veterinary decision: cats get NSAID class drugs or opioids by prescription only, never a human painkiller, and 1 tablet of paracetamol can kill a 4 kg cat. Ask what to give, for how many days, and what to do if the cat stops eating on day 2. Expect the estimate to sit in the range on the cost tables for a scale and polish, and to double or triple if 4 or more teeth come out with x-rays. Weight loss before the visit is the number that predicts the bill, so weigh weekly and write it down. The face at rest is scored in pain observation in senior cats, and what can be done for the mouth during the 2 weeks before the dental is in pain management for senior cats.
Terms mentioned in this article
Frequently asked
How many dropped kibble pieces mean a problem?
5 or more pieces per meal, on 2 meals in a row, is the number worth writing down. A healthy cat leaves 0 to 1 piece out of 10 in a kibble test; 3 or 4 points at pain on 1 side, and 5 or more usually means both sides hurt. Repeat the test 3 days running before you book.
Why does my old cat only eat wet food now?
Refusing dry food while emptying a can of pate usually means the appetite is fine and the pain is mechanical, which points at teeth rather than nausea or kidney disease. It is a useful bridge for 2 weeks, not a solution, because soaked kibble still needs chewing and grows bacteria after 30 to 60 minutes.
Do cats need to be put under for dental x-rays?
Yes, and that is the point. About 60 percent of the tooth sits below the gum line, so resorption and root disease cannot be seen or treated on a conscious cat. A 20 minute anesthetic with x-rays answers whether 1 tooth or 6 need to come out, which changes both the plan and the estimate.