Thai screening puts 3 organs on 1 calendar: teeth from 5 months, airways from the first cough, and heart muscle from 12 months. That means 2 dental checks a year, an echo at 12 months and every 12 after that, and 1 chest film the first time the cat coughs rather than the third. Year 1 runs 480 to 900 dollars, and the cheapest test is counting breaths at home.
Evidence is limited, so the plan is the general one
The Thai is a re-created breed with a small stud book, and the published record on it is thin: no DNA test is validated for the Thai, and no cardiomyopathy mutation is published for the line. Dental disease, feline asthma and hypertrophic cardiomyopathy (HCM) are the 3 problems that come up most in the breed's own veterinary discussion, and each has a screening test that works without knowing prevalence. Treat any percentage you read on a breeder site as unverified. Evidence is limited here, and what follows is the general cat protocol with a Thai weighting: teeth earliest, airways at the first symptom, heart from 12 months.
Teeth: the 4 to 6 month window
Baby teeth should be gone by 6 months, and the 4 canines are the ones that stay. A check at 5 to 6 months catches a retained canine while it is still a 10 minute extraction at 150 to 400 dollars, instead of a crowded bite. From 12 months, grade what you see: 0 for clean, 1 for plaque on the canine and upper fourth premolar, 2 for deposit along the gum line with a red edge, 3 for recession or a mobile tooth. Two checks a year, folded into the 2 routine exams at 60 to 120 dollars each, catch grade 1 while a scale and polish at 300 to 700 dollars still solves it. Brush 5 to 7 days a week with a soft brush and pet toothpaste, and accept that chews do not replace a check.
Asthma: a cough is not a hairball
A hairball arrives as a tube of fur after 10 to 20 seconds of hacking; asthma is a dry cough with the neck extended, often after litter box use or at 3 in the morning, and it does not produce anything. Count the resting respiratory rate first: chest movements in 30 seconds, doubled, with 30 breaths per minute as the ceiling and 40 as the number that ends the week. A chest X ray at 120 to 250 dollars shows the classic pattern but a normal film does not exclude asthma, which is why the response to a 2 week trial matters more than the picture. Switch to low dust litter and stop scented plugins in the same week. Bronchodilators and inhaled corticosteroids are prescription categories only, and a cat that has never been imaged should not start them blind.
HCM: echo at 12 months, then every 12
HCM is a thickening of the heart muscle that shows up as a murmur, a gallop, or nothing at all, which is why the echo rather than the stethoscope sets the schedule. Auscultation is free inside the exam and worth doing every 6 months; a murmur at grade 2 of 6 or louder buys an echo the same month. The echo is 220 to 450 dollars and 20 to 30 minutes, and the 3 numbers to keep are left ventricular wall thickness (5.0 mm normal, 5.0 to 5.9 mm recheck in 6 months, 6.0 mm and above abnormal), the left atrium to aorta ratio (1.5 ceiling, 1.7 changes the week) and whether systolic anterior motion is present. A NT-proBNP blood test at 60 to 120 dollars is a triage tool, not a diagnosis. Echo every 12 months through age 6, then every 12 months for life; after 3 clean annual scans some cardiologists move to 24 months.
The calendar, in 2 currencies
| Age | Dental exam | Echo | Chest X ray | Urinalysis | USD / year | CNY / year |
|---|---|---|---|---|---|---|
| 5 months | 1, retained teeth | 0 | 0 | 0 | 90 to 180 | 640 to 1280 |
| 12 months | 2 | 1 | 0 | 1 | 480 to 900 | 3410 to 6390 |
| 2 to 3 years | 2 | 1 | on cough | 1 | 380 to 620 | 2700 to 4400 |
| 4 to 6 years | 2 | 1 | on cough | 1 | 390 to 640 | 2770 to 4540 |
| 7 to 9 years | 2 | 1 | 1 baseline | 2 | 560 to 980 | 3980 to 6960 |
| 10 years and up | 2 | 1 | on signs | 2 | 600 to 1050 | 4260 to 7460 |
Rows assume normal results, at 7.1 yuan to the dollar. A murmur moves the next echo to 4 weeks; 2 abnormal urinalyses 4 weeks apart change the plan; 1 abnormal value after a stressful car ride does not.
4 signals at home
Breathing: count 30 seconds of chest movement at rest, twice a week, and write the doubled number down, because 24 becoming 32 over 3 weeks is a trend and 32 alone is a snapshot. Cough: note the time of day and whether it follows litter use, since 3 coughs a week for 2 weeks is a reason to book. Gums: lift the lip weekly and look at the canine gum line for a red edge, which is grade 2 and the point to book a cleaning. Weight: monthly on a baby scale, because a 200 g drop over 8 weeks on a 4 kg cat is easy to explain away and hard to see.
Call within these hours
| What you see | Call within | Why the clock matters |
|---|---|---|
| Open mouth breathing, or 40 breaths a minute at rest | 0 to 1 hour | asthma crisis and heart failure look alike |
| Blue or grey gum colour | 0 hours, emergency | oxygen is the missing variable |
| Back legs dragging, cold paw pads | 0 hours, emergency | a clot in the aorta |
| Coughing 10 times in 24 hours, new | 12 to 24 hours | the first film is cheaper than the third |
| No food for 24 hours plus hiding | 24 hours | liver fat accumulation after 48 to 72 hours |
What it costs, and what to skip
Year 1 runs 480 to 900 dollars: 2 exams at 60 to 120 each, 1 echo at 220 to 450, 1 urinalysis at 35 to 70, a chemistry panel at 80 to 180, and 1 dental check built into an exam. Later years run 380 to 620. Skip 3 things: a DNA panel not validated in this breed, an annual chest film on a cat that never coughs, and grain free food bought for asthma. Prescription categories used for asthma are bronchodilators and corticosteroids, inhaled where the cat tolerates a mask, all by veterinary prescription only.
5 steps this month
- Book the dental check at 5 to 6 months, before the canines set the bite.
- Count resting breaths twice this week and write the number on the fridge.
- Swap to low dust litter and remove scented plugins in the same week.
- Book the 12 month echo and ask for wall thickness, LA/Ao and SAM in writing.
- Start brushing 5 days a week, 30 seconds a side, with pet toothpaste.
None of this diagnoses asthma or HCM: both need imaging, and 1 normal film proves less than 3 weeks of home breathing numbers. The calendar's job is to put the first echo and the first film on the record while the cat still looks fine. If the breed choice is still open, the breed quiz is the 5 minute version, and the Tonkinese plan shows the same 3 organs in a close relative.
Terms mentioned in this article
Frequently asked
Is a cough in a Thai cat usually asthma?
A dry cough with the neck extended, often after litter use or at night, is the asthma pattern, while a hairball ends with a tube of fur after 10 to 20 seconds of hacking. Asthma is confirmed by imaging plus response to a 2 week trial, and the home number that matters is the resting respiratory rate, with 30 per minute as the ceiling and 40 the point to call.
When should the first heart echo happen?
At 12 months, which is early enough to record a baseline wall thickness before breeding age and late enough for the measurement to mean something. Repeat every 12 months through age 6 and yearly after that, and bring the previous report so 5.4 mm is read as a trend rather than as one number.
Do retained baby teeth really need removing?
The 4 canines are the ones that persist, and a retained canine at 5 to 6 months crowds the adult tooth and traps food along the gum line for years. Removal at that age is a 10 minute procedure at 150 to 400 dollars; waiting turns it into a dental cleaning plus extraction at 300 to 700 dollars before the cat is 3.