Cornish Rex

Cat breed · Cornwall

Overview

The Cornish Rex is a breed of domestic cat. The Cornish Rex only has down hair. Most breeds of cat have three different types of hair in their coats: the outer fur or "guard hairs", a middle layer called the "awn hair"; and the down hair or undercoat, which is very fine and about 1 cm long. Cornish Rexes only have the undercoat. The curl in their fur is caused by a different mutation and gene than that of the Devon Rex. The breed originated in Cornwall, Great Britain.

Temperament

Characteristics: The coat of a Cornish Rex is extremely fine and naturally curly. Their light coat means that they are best suited for indoor living in warm and dry conditions, as they are sensitive to low temperatures.

The breed is sometimes referred to as the Greyhound of the cats, because of the sleek appearance and the galloping run characteristic of the breed.

Appearance

Characteristics: The coat of a Cornish Rex is extremely fine and naturally curly. Their light coat means that they are best suited for indoor living in warm and dry conditions, as they are sensitive to low temperatures.

The breed is sometimes referred to as the Greyhound of the cats, because of the sleek appearance and the galloping run characteristic of the breed.

Appearance: According to the Governing Council of the Cat Fancy (GCCF) standard, the Cornish Rex's colour is irrelevant — therefore the cat may be any colour.

Aside from the distinctive coat, the Cornish Rex is set apart by its 'foreign type', slender legs and tail, oval eyes, and wedge shaped head. The Cornish Rex's ears are large and wide at the base with rounded tips and are described as being almost mussel shell shaped. The eyes are medium in size and come in all varieties of eye colour. The body is slender and muscular with small paws.

History

Origin: The distinctive look of the Cornish Rex is a genetic mutation that originated from a litter of kittens born in the 1950s on a farm in Cornwall, UK. One of the kittens, a cream-colored male named Kallibunker, had an extremely unusual, fine and curly coat; he was the first Cornish Rex. The owner then backcrossed Kallibunker to his mother to produce 2 other curly-coated kittens. The male, Poldhu, sired a female called Lamorna Cove who was later brought to America and crossed with a Siamese, giving the breed their long whippy tails and big ears.

The Devon Rex looks similar in appearance to the Cornish Rex but has guard hairs and sheds. The Devon Rex mutation is different from the Cornish Rex mutation in that the Devon has shortened guard hairs, while the Cornish Rex lacks guard hairs altogether.

Every pet is one of a kind. This guide covers what's typical for the breed, but your own dog or cat will have their own personality, quirks and needs — think of it as a friendly starting point, not the final word. Whenever you'd like advice tailored to your companion, the team at OC Pets is always happy to help.
Sources (reused under open licences, with thanks): Wikipedia — “Cornish Rex” (CC BY-SA 4.0) · Wikidata (CC0) · image (CC BY-SA 4.0, via Wikimedia Commons) · Compiled by OC Pets Veterinary Clinic, updated 15-06-2026.