Cat Breed Comparison
Cornish Rex vs LaPerm: Key Differences
Cornish Rex and LaPerm 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 | LaPerm |
|---|---|---|
| Size | Small to Medium | Medium |
| Weight | 6–10 lbs (2.7–4.5 kg) | 6–12 lbs (2.7–5.5 kg) |
| Lifespan | 12–15 years | 12–15 years |
| Origin | England (Cornwall, 1950) | United States (Oregon, 1982) |
Visual Differences
Telling a Cornish Rex from a LaPerm
Cornish Rex has an extremely short, fine velvet coat of tight waves, a long egg-shaped head with a Roman nose, huge ears, and an arched whippet-like body. LaPerms have full-length loose curls, a modified wedge head, and a moderate athletic build. The Cornish Rex curl comes from a recessive gene; the LaPerm curl is dominant.
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
LaPerm Key Markers
- Soft, wavy, loose curls covering the body — the coat is the breed's defining feature: full, springy curls with a loose, open wave pattern; the curls are tightest around the neck (ruff), belly, and base of the tail; whiskers are long and curly with a distinctive crimp
- Modified wedge-shaped head with a gently rounded skull, a short muzzle, and prominent whisker pads — the CFA calls it "a modified wedge with soft curves"; the muzzle is short and well-developed with a visible whisker break and a gentle curve from forehead to nose
- Medium-large, almond-shaped eyes in gold, green, copper, or blue — wide-set and expressive with a sweet, gentle expression; the eye color complements the coat color in warmth and tone
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
LaPerm
- Gentle and affectionate — bonds closely with family members and enjoys being held, pet, and part of daily activities
- People-oriented without being demanding — follows owners around but settles quietly when you're busy
- Playful with moderate energy — enjoys interactive toys, climbing, and puzzle feeders without being hyperactive
- Good with children, dogs, and other cats — the calm temperament makes it adaptable to multi-pet households
- Intelligent and trainable — responds to name, learns tricks, and enjoys training sessions
- Quiet voice — communicates with soft trills and meows rather than loud persistent vocalization
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
LaPerm
- Hypertrophic cardiomyopathy (HCM) — reported in the breed; regular echocardiogram screening recommended for breeding cats; early detection through annual cardiac screening improves management outcomes
- Patellar luxation — kneecap dislocation seen in some LaPerm lines; ranges from occasional skipping to lameness requiring surgical correction
- Dental disease — the modified wedge muzzle contributes to some tooth crowding; regular dental care and annual oral exams recommended
- Skin oil management — the reduced guard hair coverage can lead to oilier skin and occasional breakouts; gentle bathing when needed helps manage buildup without stripping natural oils
- Obesity — moderate activity level means weight can accumulate without portion-controlled feeding; regular exercise and measured portions are important
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 LaPerm?
Cornish Rex has an extremely short, fine velvet coat of tight waves, a long egg-shaped head with a Roman nose, huge ears, and an arched whippet-like body. LaPerms have full-length loose curls, a modified wedge head, and a moderate athletic build. The Cornish Rex curl comes from a recessive gene; the LaPerm curl is dominant.
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 LaPerm cats hypoallergenic?
No — no cat is truly hypoallergenic. Some allergy sufferers report milder reactions to LaPerms because the curly coat sheds less, but they still produce the Fel d 1 allergen.
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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.
LaPerm
A cat with a soft, wavy coat that feels like fine human hair — the LaPerm carries a dominant rex gene that produces loose curls, especially around the neck, belly, and tail. The breed started with a spontaneous mutation on a farm in Oregon in 1982. LaPerms are gentle cats that bond closely with their families.