An American Curl needs 4 screens on a fixed clock: an echocardiogram starting at 12 months, 1 DNA panel for cardiac variants, imaging of the ear canal when it looks narrow, and a urinalysis every 12 months. The curl gene does not add a fifth item, because it acts on ear cartilage and stops there. What the breed adds is mechanical: an ear that cannot shake debris out, and a hematoma that gets expensive after 24 hours.
Start at 12 months, not at 6
A first echo at 12 months gives a wall measurement you can compare against later; a scan at 6 months often lands in a range nobody can interpret, . From 12 months, repeat every 12 months through age 6. After 6, keep the annual echo and add blood pressure, since 1 in 5 older cats with heart disease also runs high. Three normal scans in a cat over 8 can justify moving to every 24 months, but that is a cardiologist call.
4 tests, 4 clocks
Echocardiogram. Wall thickness in diastole under 5 mm is normal, 5 to 5.9 mm is a gray zone that earns a recheck in 6 months, and 6 mm or more meets the usual definition of hypertrophic cardiomyopathy (HCM). The left atrium to aorta ratio should sit at 1.5 or below; above 1.7 changes the plan the same week. Budget 220 to 450 dollars.
DNA panel. One cheek swab, once in the cat's life, any time after 3 months, 80 to 200 dollars, 10 to 21 days for results. A positive result for a known cardiac variant justifies an echo every 12 months for life. A negative result does not clear the cat, because other genes and non-genetic causes produce the same thick wall.
Radiographs. Not an annual item. Order them when the cat tilts its head, scratches 1 ear, or has discharge that returns within 4 weeks of treatment; the film shows the bony bulla behind the canal, where a deep infection hides. Cost 120 to 300 dollars.
Urinalysis. Every 12 months from age 1. You want urine specific gravity between 1.035 and 1.060, protein to creatinine under 0.2, and SDMA at or under 14 micrograms per deciliter. Cost 40 to 90 dollars and it catches kidney and bladder change 12 to 18 months before a chemistry panel does.
The curl gene stops at the ear
The trait is dominant and affects cartilage folding in the pinna. It does not reach the spine, the hips, the joints, or the skeleton, so no hip films or joint supplements are needed because of the ears. The practical consequence runs the other way: folded cartilage cannot rotate the pinna through the full sweep a straight ear manages, the canal opening narrows, and wax and debris stay put. That is a cleaning problem and an infection problem, not an orthopedic one.
Hematoma: the first 24 hours set the bill
A cat shakes its head because something itches, and the pinna fills with blood between the cartilage and its lining. Inside 24 hours, a single needle aspiration plus a pressure wrap costs 150 to 350 dollars and often holds. Past 72 hours the clot organizes, and the cat needs a drain or mattress sutures at 400 to 800 dollars, with a higher chance of a crinkled ear for life. In both cases the shake has to be treated too, or the hematoma returns within 2 to 3 weeks. That means otoscopy and a cytology swab at 60 to 150 dollars first.
A canal that cannot drain itself
Check both ears every 14 days, and clean with a veterinary flush every 3 days only while discharge is present. Never push a cotton bud past the bend; the canal is 3 to 5 mm wide at the opening and packing debris deeper. A waxy ear that smells sweet is usually yeast, a dark crumbly ear is usually mites, and a red swollen ear with pus is usually bacterial; the 3 need different drugs, which is why a 20-dollar cytology saves a 60-dollar bottle of the wrong thing. Prescription ear drops combine an antibiotic, an antifungal, and a steroid class, by veterinary prescription only, and most courses run 7 to 14 days.
Heart and weight belong on 1 visit
HCM is reported less often in this breed than in Maine Coons or Ragdolls. Low frequency is not zero, and a murmur is an unreliable filter: a cat can have a 7 mm wall and a quiet chest. Weigh the cat on the same scale monthly. A 4.5 kg cat that reaches 5 kg is 11 percent over ideal, and that is the point where the echo report gets harder to read, anesthesia gets riskier, and the hematoma risk climbs with every extra 500 g. Body condition score 5 out of 9 is the target; 7 out of 9 means act now.
4 signs for the fridge list
- Head shaking or ear scratching more than 3 times in a day, or any scratching that breaks skin.
- A pinna that feels thicker, warmer, or doughy on 1 side, especially after a shake.
- Sleeping respiratory rate above 30 breaths per minute, counted for 30 seconds and doubled.
- Weight up 500 g in 8 weeks, or a waistline that disappears when viewed from above.
Hour-level thresholds
| Signal | Window (hours) | Action | Typical cost (USD) |
|---|---|---|---|
| Open-mouth breathing, blue tongue | 0 | Emergency room now | 300 to 900 |
| Sleeping rate above 40 per minute | 1 | Call, go within the hour | 150 to 400 |
| Pinna suddenly doughy on 1 side | 24 | Book today for drainage | 150 to 600 |
| Pus in the canal, head tilt, off food | 6 | Same-day otoscopy | 80 to 250 |
| Sudden hind leg weakness or crying | 0 | Emergency, clot risk | 400 to 1200 |
| No food for 24 hours | 12 | Call within 12 hours | 80 to 200 |
Read the shortest column: 2 rows are 0-hour problems.
What a year of screening costs
Annual exam with bloodwork 180 to 350, echo 220 to 450, urinalysis 40 to 90, ear check with cytology 60 to 150 when needed, and 1 DNA panel in year 1 at 80 to 200. A calm year runs 500 to 900 dollars; a year with a hematoma and an ear workup runs 900 to 1600. Insurance for a breed with a known cardiac item typically quotes 25 to 45 dollars a month, and pre-existing ear disease is usually excluded, which is an argument for insuring at 4 months, not at 4 years.
5 steps this month
- Book the 12-month echo and the cheek swab on the same visit.
- Put a monthly weigh-in on the calendar, same scale, same time of day.
- Check both ears every 14 days and photograph anything pink or smelly.
- Count sleeping breaths tonight and write the number on the fridge.
- Set a reminder for the annual urinalysis, and compare against the weight trend chart.
If a second cat is joining the house, screen the newcomer on the same clock; the cardiac protocol is laid out in the Maine Coon heart screen. And before any ear drop, any cleaner, or any human remedy goes near the canal, check it against the toxin list, because tea tree oil and several human ear preparations are not safe in a cat.
Terms mentioned in this article
Frequently asked
Does a curled ear mean the cat will have bone or joint problems?
No. The gene behind the curl changes cartilage folding in the pinna and is not linked to the spine, hips, or joints, so hip films and joint supplements are not indicated because of the ears. The ear does need mechanical help: check both canals every 14 days, clean with a veterinary flush only while discharge is present, and treat any head shaking within 24 hours, because that is what produces a hematoma.
How often does an American Curl need an echocardiogram?
One at 12 months as a baseline, then every 12 months through age 6, and every 12 months after that with blood pressure added. If a cat over 8 has 3 consecutive normal scans, a cardiologist may stretch the interval to 24 months. HCM is reported less often in this breed than in Maine Coons, but a quiet chest does not rule it out, and a 6 mm wall can exist with no murmur at all.
What does the whole screening program cost per year?
A quiet year runs 500 to 900 dollars: exam with bloodwork at 180 to 350, echo at 220 to 450, urinalysis at 40 to 90, and an ear check with cytology at 60 to 150 when it is needed. Add 80 to 200 once for the DNA panel. A year with a hematoma and a full ear workup lands between 900 and 1600 dollars, which is why the 24-hour window matters more than the choice of clinic.