A Cornish Rex is a specific breed of domestic cat. Unlike most cats, which have a three layered fur coat, Cornish Rex only have the undercoat. Domestic cats generally live 12 to 14 years in captivity.
It's a cat with very short curly hair. A related cat is the cornish rex
Devon Rex
Devon rex rusty spotted cat
German Rex, a variation of the Devon Rex.
Sphynx, the cornish rex and Devon rex are almost hairless...
Devon Rex
The binomial (scientific) name for a Devon Rex is felis catus. The Devon Rex is a breed or type of domestic cat, not a unique species. Much like there are all different appearances of humans, but we are all still of the human species, the breeds of cat have many different appearances but they are all of the same species.
The highlander cat is not hypoallergenic. However, there is a long list of cat breeds that are hypoallergenic. Some of these include the Bengal, the Devon Rex, the Siamese, as well as the Burmese.
Devon Rex's are a genetically bred species of cat and originate from America
Cornish Rex and Devon Rex
A devon rex cat will generally weigh around 6-10lbs depending on the gender, ammount of food, and activity level.
One can find information about Devon Rex on the Wikipedia website where they have information about the history and characteristics of this cat. Information is also available on PetFinder.