History
As per Wikipedia
The Sphynx cat is a breed of cat known for its lack of coat (fur). It was developed through selective breeding, starting in the 1960s. The skin should have the texture of chamois, as it has fine hairs. Whiskers may be present, either whole or broken, or may be totally absent. Their skin is the color that their fur would be, and all the usual cat markings (solid, point, van, tabby, tortie, etc.) may be found on the Sphynx cat’s skin. Because they have no coat, they lose more body heat than coated cats. This makes them warm to the touch as well as heat-seeking.
Maintenance
Caring for these hairless kitties
Though Sphynx cats lack a coat to shed or groom, they are not maintenance-free. Body oils, which would normally be absorbed by the hair, tend to build up on the skin. As a result, regular bathing is usually necessary weekly or bi-weekly. Care should be taken to limit the Sphynx cat’s exposure to outdoor sunlight for long periods of time, as they can develop sunburn and skin damage similar to us humans. In some climates, owners provide coats or other clothing in the winter to help them conserve body heat.
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Sphynx cats can also have more ear wax than most hairy domestic cats because they have little to no hair in their ears to catch and protect them from a build up of impurities in their ears, like dirt, skin oils (sebum), and ear wax which accumulates more frequently in the hairless sphynx breed. The Sphynx cat’s ears will need to be cleaned on a weekly basis, usually before bath time.
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The Sphynx breed also tends to accumulate oils and debris under their nails as well as the skin fold above the nail due to the lack of fur, so, like the ears, the nails and surrounding skin folds need to be cleaned properly as well (during bath time). Due to these factors the breed may require more grooming than a typical domestic cat with fur.
Health
Unfortunately every breed comes with some common health issues
The sphynx breed does have instances of the genetic disorder hypertrophic cardiomyopathy (HCM). Studies are being undertaken to understand the links in breeding and the disorder.  The Sphynx cat has a high rate of heart disease, either HCM or mitral valve dysplasia. In a study of 114 cats, 34% were found to have an abnormal heart. 16 had mitral valve dysplasia and 23 had HCM. These prevalence's were found in cats with an average age of 2.62 years. It is common practice to perform scans annually.