An American Shorthair coasts on a sturdy frame and a coat that repels dirt, which is why the problems it does develop get found late. Four jobs repeat every year - coat, weight, teeth, heart - each with a season and a starting age.
The anchor numbers: 4.5-6 kg for a neutered male, 3.2-4.2 kg for a female, 190-250 kcal a day for a typical 5 kg adult, a baseline echocardiogram at 12-18 months, and a first dental cleaning at 2-3 years.
Four jobs, four seasons
Divide the year by what the coat and the clinic calendar are doing. March to May is the heavy shed and the season of swallowed hair. June to August is weight-watch season, when indoor activity falls but portions do not. September to November brings the second shed and the annual exam, booked before December fills up. December to February is static.
Each job needs a fixed trigger, not a good intention: weigh on the first Sunday of the month, brush Tuesday and Saturday, book the dental check in the birthday week.
Grooming and the shed calendar
The dense double coat keeps dirt on the surface, so 5-10 minutes with a rubber glove once a week is enough for most of the year. Mats are rare and start in two places owners forget: behind the front legs and at the tail base.
During both sheds, move to three or four sessions a week of 10-15 minutes, glove first, then a fine metal comb to lift the loosened down before it felts. Brushing beforehand and one wet meal a day do more than any malt paste.
Bathing is close to unnecessary - every 3-4 months at most. Nails need a trim every 2-3 weeks; wipe ears weekly with a dry pad.
| Window | Coat | Weight | Clinic |
|---|---|---|---|
| Mar-May | 3-4 sessions weekly, 10-15 min | Weigh monthly | Book annual exam |
| Jun-Aug | Weekly, 5-10 min | Weekly in heat, watch intake | Flea and worm check |
| Sep-Nov | 3 sessions weekly for 3 weeks | Weigh monthly, act on 5% gain | Echo if due, dental if due |
| Dec-Feb | Weekly, check armpits | Weigh, cut 10% if rising | Vaccine booster if due |
Weight targets and how often to weigh
Adult males reach 4.5-7 kg, females 3.2-4.5 kg, and the top of each range belongs to large intact cats rather than indoor neuters. A workable target is 4.5-6 kg for a neutered male and 3.2-4.2 kg for a female. Weigh monthly on a baby scale or a kitchen scale with the cat in a carrier, and record it.
Act on a 5% gain over 8-12 weeks, about 250-300 g on a 5 kg cat, or 10% in a year. The response is a 10% ration cut and a re-weigh after four weeks, not a crash diet. Ribs should be easy to feel under a thin layer, and the waist visible from above. If ribs need pressing, the cat is already 15-20% over ideal and needs a measured plan with a vet's help, framed as gradual loss rather than a sprint.
Screening ages for heart, hips and teeth
Hypertrophic cardiomyopathy (HCM) is the condition to build the calendar around: common in the breed, and silent for years. Most cardiologists suggest a baseline echocardiogram at 12-18 months and a repeat every 12-24 months for a pet with no murmur; any murmur moves the scan to the week it is heard. Breeding cats are scanned yearly.
Hips are read by X-ray at 24 months, when the joints are mature. Before that, the early sign is behavioural: a cat that stops using its usual shelf or lands hard. Dental work starts with a full oral exam at 2 years; if tartar returns within a year, the interval is 12 months, otherwise 18. Brushing three or four times a week delays the first scaling by years, and the gum line is worth a look at every weigh-in.
Food: 190-250 kcal and the neutering trap
A 5 kg neutered adult needs about 190-250 kcal a day, which is 45-60 g of a 3,800 kcal/kg dry food or 2.5-3.5 pouches of an 85 g wet food at 80 kcal. Two timed meals beat a full bowl left down, and free-feeding should stop at the neuter: energy needs drop by roughly 20-30% after surgery while appetite does not.
Aim for 35-45% protein on a dry-matter basis, and let wet food carry at least half the daily calories, since this breed drinks average amounts. Treats stay under 10% of intake, around 20 kcal, which is four or five freeze-dried cubes. Any food change runs over 7-10 days in 25% steps.
Exercise minutes that actually happen
The daily floor is two 15-20 minute chase games, one before breakfast and one before dinner, each ending with a catch. A puzzle feeder for one meal turns 90 seconds of eating into 10-15 minutes of work.
Height covers the rest: a 150-180 cm tree by a window, two shelves at different levels, a perch facing a bird feeder. In summer, play before 8 a.m. and after 8 p.m.; a 5 kg cat in a 28°C room quits after 4 minutes and finds tile instead.
Five mistakes, and when to call the vet
- Free-feeding through the neuter, then wondering why the cat is 1 kg heavier by age three.
- Skipping the 12-18 month echo because the cat "seems fine" - HCM murmurs are often absent.
- Bathing to control shedding instead of combing the undercoat out.
- Reading a hairball as normal when it happens more than once every 2-3 weeks.
- Waiting a week on dental pain: a cat that drops food or chews on one side has usually had gum disease for months.
Go to the vet the same day if the cat breathes through its mouth, if the sleeping rate passes 30 breaths a minute, or if the back legs suddenly go weak or cold, no urine after 6-8 hours of straining, or no food for 24 hours. Book within 48 hours for a new cough, a 200 g drop in a month, or bad breath with red gums.
Your first 30 days
- Weigh the cat twice, a week apart, and write both numbers on the fridge.
- Set two feeding times and measure the ration to the gram for 14 days.
- Book the annual exam and ask whether an echo is due by age.
- Begin tooth brushing three times a week, 30 seconds on each side.
- Add one vertical platform at 120 cm or higher near a window.
Frequently asked
How often should an American Shorthair be brushed?
Once a week for 5-10 minutes with a rubber grooming glove covers most of the year, because the dense coat keeps dirt near the surface and rarely mats. During the two sheds, in March to May and September to November, go to three or four sessions a week of 10-15 minutes and follow with a fine metal comb to pull out loose undercoat before it felts against the skin.
What weight should a neutered American Shorthair male hold?
Most neutered males do best between 4.5 and 6 kg, while females sit at 3.2 to 4.2 kg. Weigh monthly and treat a 5% gain over 8-12 weeks, roughly 250 to 300 g on a 5 kg cat, as the trigger to cut the daily ration by 10% and re-weigh after four weeks rather than starting a strict diet.
At what age does heart screening start in this breed?
A baseline echocardiogram at 12 to 18 months, then a repeat every 12 to 24 months for a pet with no murmur, is what most cardiologists suggest for a breed with this much hypertrophic cardiomyopathy. Any murmur means scanning in the week it is heard, and breeding cats are scanned once a year regardless of age.