A Sphynx care year is mostly a washing and heating schedule. The cat has no coat to hold a layer of warm air, so it burns calories keeping itself at temperature, and its skin produces the oil fur would normally absorb. Two recurring jobs follow: keep the room at 22-24 C, and wash the cat every 10-14 days. Get those two wrong and the coat turns tacky, the ears load up with brown wax and the cat takes up residence on the router.
Weight is the third number. A Sphynx that stops eating has far less margin than a coated cat, because it has no fat layer worth the name and loses heat continuously.
Weight targets by age
Birth weight is 80-100 g. At 8 weeks expect 700 g to 1 kg; at 6 months, 2-2.8 kg; at 12 months, 2.8-4 kg. Adults run 3.0-5.5 kg, with males at the top of that range. Because the shape is visible, owners tend to think the cat is thinner than it is: a Sphynx at a healthy 4-5/9 still shows a tuck and a visible last rib under the skin, and that is correct, not emaciation.
Weigh monthly, and weekly for the first 6 months. A Sphynx needs roughly 10% more calories than a coated cat of the same weight, so a 4 kg adult sits near 230-280 kcal a day rather than 200-240. Do not cut food to fix a body that looks bony; cut it only when the waist disappears.
The bath and skin calendar
The default interval is 10-14 days. Stretch it to 7-10 days in summer or in a centrally heated winter, because both make the skin oilier; stretch the interval out to 3 weeks only if the skin stays matte and the bedding stays clean. Daily is too often and produces dry, flaky skin that then over-produces oil.
| Period | Skin and ears | Bath interval | Extra job |
|---|---|---|---|
| Jan-Feb | Dry heated air, static, flaky patches | 10-14 days | Sweater below 20 C; check folds daily for redness |
| Mar-May | Fine down sheds, skin oilier | 10 days | Wipe the down off bedding; wash beds weekly |
| Jun-Aug | Sunburn risk, more oil from heat | 7-10 days | No direct sun through glass; shade and cool tile |
| Sep-Oct | Skin settles, new down growth | 12-14 days | Weekly ear clean; nails every 2 weeks |
| Nov-Dec | Dry indoor air, radiator burns | 10-14 days | Block radiators above 40 C surface; heated bed |
Wash with a gentle pet shampoo, not human shampoo, and rinse twice: residue in a skin fold is what feeds yeast. Dry completely, including the armpits, the chin fold and between the toes, with a microfiber towel and then a low-heat dryer held at arm's length. Ears get cleaned weekly with a vet ear cleaner on a cotton pad, never a cotton bud down the canal. Nails every 2 weeks, because without fur the quick stays visible and easy to cut accurately.
Screening calendar: heart, teeth, skin
HCM is the breed's most serious problem and prevalence is high enough that an annual echocardiogram from 12 months is reasonable; breeding cats should be screened before every litter. Dental disease arrives early, so a dental check every 6 months from age 1, with a scale and polish under anesthesia when tartar reaches the gum line. Hereditary myopathy shows as weakness, a low head carriage and an unwillingness to jump rather than as pain, and any of those deserves a workup.
Skin gets checked at home, not at the clinic. Yeast overgrowth smells yeasty and looks brown and greasy in the folds; bacterial dermatitis looks red, weepy and sore. Either one is a vet visit with a skin cytology, not a reason to bathe more often - over-bathing an inflamed fold makes it worse.
Diet, water and warmth
Portion the day's food into 3 small high-protein meals rather than one large one, because a Sphynx burns through a meal fast and vomits on a full stomach more readily. Water intake of 40-60 ml per kg matters double here: skin and kidneys both depend on it, and a dehydrated Sphynx looks sunken around the eyes within a day. Shallow ceramic bowls, refreshed twice a day.
Room temperature is a care parameter, not a comfort preference. Keep the living area at 22-24 C; below 20 C the cat seeks heat and becomes inactive. Heated beds are worth more than sweaters, and if you use a sweater, take it off for an hour a day to check the skin underneath. Block access behind radiators and to any heat source whose surface exceeds 40 C, because skin with no fur burns faster than you would expect.
Company, and how long it can be alone
This is the most socially dependent breed on most lists. Six hours alone is workable for an adult; 10 hours regularly is not, and produces separation behavior - door scratching, yowling, over-grooming the skin raw. Four short bursts of 5-10 minutes beat one long session, because the breed sprints rather than endures. A second cat is the cheapest fix, and warm vertical spots near where you sit keep the cat in the room rather than under the duvet.
The five most common Sphynx care mistakes
- Bathing weekly "to keep it clean". Dry skin over-produces oil and the cat ends up greasier.
- Not drying the folds. Armpits, chin and toe webs stay damp and grow yeast.
- Running the house at 18 C and wondering why the cat is lethargic and eats double.
- Letting it sunbathe in a window. Glass does not block the UV that burns skin with no fur on it.
- Skipping dental checks because the teeth are "only" 2 years old. Gingivitis in this breed often starts before age 3.
When to call the vet
Head shaking with brown discharge, a fold that smells yeasty or bleeds, refusing food for 24 hours, open-mouth breathing, or a resting respiratory rate above 30 a minute. Tell any vet treating a Sphynx that the breed loses heat fast under anesthesia, so warming pads and a warm recovery cage are needed, not optional.
Frequently asked
How often should a Sphynx be bathed?
Every 10-14 days is the usual interval, tightened to 7-10 days in summer or in a heated house in winter, when oil production rises. Bathing daily is counterproductive: it strips the skin, which then produces more oil and flakes. Always dry the folds completely, because trapped moisture is what causes yeast problems.
Why does my Sphynx feel so hot?
Because there is no coat holding a layer of insulating air, body heat reaches your hand directly, so the skin feels warmer than a coated cat's. The cat is not feverish. It also loses heat faster, which is why it needs a room at 22-24 C, a heated bed and about 10% more calories than a coated cat of the same weight.
Are Sphynx cats hard to keep clean?
They need a routine rather than constant work: a bath every 10-14 days, ears cleaned weekly, folds checked and dried daily, nails every 2 weeks, and bedding washed weekly because oil transfers to fabric. Skip the routine for a month and you get greasy flanks, brown waxy ears and stained sheets.