A Norwegian Forest Cat is slow to mature, heavy on its frame, and covered in a coat designed for snow. The care year is built around three facts: the cat keeps growing until 15 months, the undercoat comes out in two heavy moults, and hypertrophic cardiomyopathy (HCM) becomes the main health question from age three.
Anchors: a 5.5-8 kg target for males and 4-5.5 kg for females, 240-290 kcal a day at 6 kg, first echocardiogram at 3 years then every 12 months, hip X-ray at 24 months.
The year in five blocks
January to March is the quiet season, and the best window for the annual exam and any scan, because the clinic is empty and the coat is at its thickest for a body condition check by hand. April to June is the spring moult, the heavy one. July and August are the risk weeks for heat, since this is a cold-climate cat with a triple coat. September to November brings the second moult and the autumn weigh-in. December is for the weight audit before the indoor months. Book the echo and the dental 6-8 weeks out.
Grooming: comb to the skin, never shave
Three passes a week of 10-15 minutes keep a Forest Cat out of trouble: a wide-toothed steel comb pushed until it touches skin along the flank, under the front legs and down the belly line, then a slicker to collect what the comb loosens. Mats begin in those three places, because the cat cannot reach them.
The spring moult runs two to three weeks and wants a daily pass; the autumn one wants four a week. Shaving is the thing to refuse: guard hairs are the cat's thermostat and its sun block, and a shaved coat returns in patches. Weekly ear wipe, nails every 2-3 weeks, two baths a year at most in a 28-30°C room, with the neck and chest dried until the skin feels warm.
| Months | Grooming | Weight and food | Health |
|---|---|---|---|
| Jan-Mar | 2-3 combings weekly | Monthly weigh, hand-check ribs | Annual exam; echo and dental when due |
| Apr-Jun | Daily for 2-3 weeks | Monthly; expect a 200-300 g moult dip | Flea and tick check after outdoor access |
| Jul-Aug | Twice weekly, check armpits | Weigh fortnightly, cool water, shade | Watch for heat stress above 26°C |
| Sep-Nov | 4 sessions weekly for 3 weeks | Monthly; act on a 5% rise | Booster if due, GSD IV result on file |
Growth: kitten food until 15 months
This is a large, slow-maturing breed, so kitten formula continues to 12-15 months rather than the 10-12 months used for smaller cats. Growth plates close late, and calorie restriction in a growing forest cat is the fastest way to produce a lanky adult with weak hips. Expect males to pass 3 kg at 5 months, 5 kg at 10 months and reach 5.5-7.5 kg by 2 years.
From 15 months, switch to adult food over 7-10 days and start measuring: 240-290 kcal a day at 6 kg, split into two meals, with 20-30% of that from wet food. A 7.5 kg male needs 280-330 kcal. The trap is the coat: a long-haired cat can carry 1 kg of excess under that fur and still look elegant, so run hands along the ribs every 2 weeks and use the scale monthly.
Screening: what starts when in this breed
HCM is the main inherited risk. Most veterinary cardiologists suggest a first echocardiogram at 3 years, then every 12 months, since this breed can convert from normal to affected within a year. A murmur heard earlier moves the scan to that week. Glycogen storage disease type IV (GSD IV) has a DNA test: a cheek swab at any age gives a clear answer, and any cat intended for breeding should be tested before mating, not after.
Hips are X-rayed at 24 months; before that, watch for a young cat that refuses to jump down from a 90 cm surface. Kneecaps are checked by palpation at every annual exam, because low-grade patellar luxation is common and usually asymptomatic until arthritis sets in around age 7. Kidneys and thyroid join the annual blood panel from age 7.
Food, water and the summer problem
Protein at 35-45% of dry matter, two measured meals, and one wet meal a day to keep the urine dilute - a large cat on dry food drinks less than its size suggests. Water intake at 6 kg runs 180-250 ml a day. In July and August keep the room under 26°C, offer a tiled floor or a cooling mat, and never leave the cat in a room above 30°C: the triple coat does not shed heat the way a shorthair's does.
Treats cap at 10% of calories, about 25 kcal at this size; food changes run 7-10 days.
Exercise: vertical, not mileage
Height is where this cat exercises, so vertical space beats any toy: a floor-to-ceiling tree with 40 cm platforms, staggered shelves up a wall, or a netted balcony. Two wand sessions of 10-15 minutes a day, timed before meals, plus a puzzle feeder, cover the rest. Because the cat is heavy, fix every platform to a wall stud.
Harness training works well with this breed and gives a indoor cat real exercise; start indoors for 2 weeks, then 10-minute sessions outside. In summer, shift play to before 9 a.m.
The mistakes that show up most
- Switching off kitten food at 10 months because the cat looks big.
- Shaving in summer to "help" with heat, which removes the insulation that matters.
- Combing the top coat only, then finding felted patches at the armpits in May.
- Waiting for a cough before the first heart scan at 3 years - most HCM is silent.
- Assuming a 7 kg cat is "just a big Forest Cat" when its ribs are hard to find.
Emergency today: open-mouth breathing, a sleeping rate above 30 breaths a minute, dragging or cold hind legs, or a kitten that collapses after 5 minutes of play. Within 48 hours for tremors or weakness in a cat under 18 months (possible GSD IV), a 300 g loss in a month, or a cough that appears at rest. Book a dental exam if the cat drops food or chews on one side.
Your first 30 days
- Weigh and record a baseline; photograph the cat from above and the side.
- Buy a wide-toothed steel comb and a slicker, and comb to the skin once.
- Check the GSD IV test and HCM scan status of the parents.
- Set two meal times and measure the daily ration to the gram.
Frequently asked
How often should a Norwegian Forest Cat be combed?
Two or three times a week for 10 to 15 minutes with a wide-toothed steel comb, worked down to the skin at the armpits, belly and hind legs, is the year-round baseline. The spring moult needs daily sessions for two to three weeks, and the autumn moult needs four sessions a week for about three weeks, because the undercoat felts quickly once it loosens.
When does heart screening start in this breed?
A first echocardiogram at 3 years, repeated every 12 months, is what most veterinary cardiologists suggest for a Norwegian Forest Cat, since a cat can go from normal to affected within a year. A murmur found earlier moves the scan to that week, and any cat used for breeding is scanned yearly regardless of age.
Should I shave my Norwegian Forest Cat in summer?
No. The guard hairs regulate temperature and block sun from the skin, and shaving removes that insulation while the undercoat grows back patchy and coarse. Keep the room under 26°C, offer a tiled floor or cooling mat, groom out the loose undercoat instead, and never leave the cat shut in a room above 30°C.