Cornish Rex

Key Visual Markers

• Short, tight, uniform marcel wave covering the entire body — the coat has no guard hairs, only a soft undercoat arranged in continuous waves; the curl is most prominent on the back and sides, and the coat lies close to the body with a silky, warm texture
• Egg-shaped head that is longer than it is wide — the CFA standard calls for a length about one-third greater than the width; the profile shows a Roman nose with a high, prominent bridge and a smooth, mild break at the forehead
• Large, high-set ears that are full and wide at the base, tapering to rounded tips — set high on the skull, contributing to the alert, inquisitive expression; the inner ear has minimal furnishings
• Medium-to-large oval eyes slanting slightly upward — set a full eye-width apart; colors include gold, green, blue-green, and odd-eyed in whites; the expression is open and bright
• Long, slender, arched body with a deep but not broad chest, a naturally arched back, and a tucked-up waistline — the CFA describes it as having a "whippet-like" silhouette; the cat stands high on very long, fine-boned legs with dainty oval paws
• Long, slender, tapering tail that is extremely flexible and carried aloft — proportionally one of the longest tails among cat breeds, covered in the same tight wave coat as the body

Temperament & Traits

• Active and playful — jumps, climbs, and invents games; retains kitten energy well into senior years and needs interactive toys and cat trees
• Intensely people-oriented — follows owners from room to room, greets at the door, and sleeps under the covers; hates being left alone for long periods
• Intelligent and trainable — learns tricks, walks on a leash, opens doors, and solves puzzle feeders; needs mental stimulation or boredom leads to mischief
• Social with strangers, children, and other pets — rarely shy or territorial; welcomes visitors and gets along with cat-friendly dogs
• Heat-seeking — the single-layer coat offers little insulation, so Cornish Rex gravitate toward warm spots, sweaters, heated beds, and laps
• Moderate vocalization — communicates with chirps, trills, and soft meows rather than loud yowling, but will voice displeasure at closed doors or empty food bowls

Health Notes

• Hypertrophic cardiomyopathy (HCM) — genetic heart disease affecting Cornish Rex; regular echocardiogram screening recommended for breeding cats, as the breed shows higher-than-average incidence
• Patellar luxation — kneecap dislocation more common in Cornish Rex than most breeds, likely due to the fine-boned hind leg structure; ranges from occasional skipping (mild) to lameness requiring surgery (severe)
• Congenital myasthenic syndrome (CMS) — a genetic neuromuscular disorder causing generalized muscle weakness, head-bobbing, and easy fatigue in kittens; DNA test available through UC Davis VGL, same mutation found in Devon Rex
• Skin sensitivity and dermatitis — the single undercoat offers minimal skin protection; Cornish Rex are prone to dry skin, breakouts, and sunburn; harsh grooming brushes and over-bathing should be avoided
• Periodontal disease — the narrow, elongated muzzle contributes to tooth crowding and gingivitis; regular dental care is particularly important for this breed, and annual professional cleanings are recommended

This information is for educational purposes only. Always consult a veterinarian for health advice specific to your cat.