Characteristics...

The Sphynx (aka Canadian Hairless) is a rare breed of cat with extremely little fur, or at most a short fuzz over its body, and no whiskers (vibrissae).

Coloring

Their skin is the color their fur would be, and all the usual cat marking patterns (solid, point, van, tabby, tortie, etc) may be found in Sphynx too. They are sometimes mistaken for Chihuahuas because of their extremely unusual and, some say, uncatlike appearance.

They are very affectionate and extroverted and like to cuddle with their humans, other humans, and each other.

Allergies

Sphynx cats are not hypoallergenic, in fact they can be even worse for severely allergic people than furred cats. But because they don't deposit hair on furniture or clothing, they tend to be easier to clean up after, and therefore often less troublesome to mildly allergic owners. Some notice symptoms but handle it by bathing and cleaning them slightly more often than one would otherwise.