Cat Breed Comparison
Cornish Rex vs Peterbald: Key Differences
Cornish Rex and Peterbald are often confused. Compare their size, weight, lifespan, origin, temperament, and health — and learn how to tell them apart at a glance.
Quick Comparison
| Trait | Cornish Rex | Peterbald |
|---|---|---|
| Size | Small to Medium | Medium |
| Weight | 6–10 lbs (2.7–4.5 kg) | 6–10 lbs (2.7–4.5 kg) |
| Lifespan | 12–15 years | 12–15 years |
| Origin | England (Cornwall, 1950) | Russia (St. Petersburg, 1994) |
Visual Differences
Telling a Cornish Rex from a Peterbald
Cornish Rex wear a short, tight curly coat with an egg-shaped head and a Roman nose. Peterbalds are bald or near-bald with an Oriental wedge head and a straight profile.
Cornish Rex Key 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
Peterbald Key Markers
- Five coat types per the TICA standard — bald (completely hairless), chamois (fine suede-like down), flock (velour-like fuzz with no guard hairs), brush (short wiry or wavy hair), and straight (a regular coat); one litter can produce several types
- Long wedge head with a straight profile, the classic Oriental shape — a long muzzle and a strong chin
- Very large, wide-set, almond-shaped ears, set to continue the wedge lines
Temperament & Personality
Cornish Rex
- 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
Peterbald
- Affectionate and people-oriented — follows owners, greets at the door, and wants to be part of everything
- Intelligent and curious — learns tricks, opens doors, and solves puzzle feeders
- Active and playful — enjoys interactive toys and climbing; stays kittenish into adulthood
- Dog-like loyalty — forms deep bonds and often walks on a leash
- Social with strangers, children, and other pets — rarely shy or territorial
- Heat-seeking — bare skin offers no insulation; Peterbalds want warm spots, sweaters, and laps
Health Notes
Cornish Rex
- 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
Peterbald
- Progressive retinal atrophy (PRA) — a genetic eye disease documented in the breed that causes slow vision loss; DNA testing available and recommended before breeding
- Skin care needs — without hair, skin oils build up into greasy film, acne, and yeast issues; regular gentle bathing is necessary
- Sunburn and temperature intolerance — bare skin sunburns easily and offers no warmth; an indoor-only lifestyle with pet-safe sunscreen near windows
- Dental disease — some lines are prone to tooth issues; regular brushing and annual cleanings recommended
- Generally robust — beyond PRA screening and skincare, no breed-specific diseases are documented
This information is for educational purposes only. Always consult a veterinarian for health advice specific to your cat.
Frequently Asked Questions
How can I tell a Cornish Rex apart from a Peterbald?
Cornish Rex wear a short, tight curly coat with an egg-shaped head and a Roman nose. Peterbalds are bald or near-bald with an Oriental wedge head and a straight profile.
Are Cornish Rex hypoallergenic?
No — Cornish Rex are not truly hypoallergenic, though their single-layer coat sheds very little and produces less loose fur. They still produce the Fel d 1 protein, and individual response varies, so some allergy sufferers find them easier to tolerate.
Are Peterbald cats hypoallergenic?
No — despite the lack of fur, Peterbalds are not hypoallergenic. Allergies are triggered by the Fel d 1 protein in skin oils and saliva, and hairless skin still produces both.
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Breed Profiles & More Comparisons
Cornish Rex
A slender, curly-coated cat with a whippet-like silhouette — long legs, arched back, and a deep chest. The Cornish Rex coat has only an undercoat — no guard hairs — giving it a short, tight wave of fur that feels like warm silk. Active, people-oriented, and endlessly curious, the breed stays kittenish well into old age.
Peterbald
A hairless, or nearly hairless, cat from St. Petersburg, Russia, with the long wedge head and svelte body of an Oriental Shorthair. Peterbalds come in five coat types, from completely bald to a regular short coat, and a single litter can contain several. Affectionate, intelligent, and intensely attached to their people, they need warmth and regular skincare.