Devon Rex vs Cornish Rex: The 2026 Breed Comparison Guide

With their distinctive wavy coats and playful personalities, the Devon Rex and Cornish Rex are two of the most captivating cat breeds. While they share a similar appearance, they possess unique genetic origins, temperaments, and care requirements. This comprehensive 2026 guide provides a detailed comparison to help you decide which of these affectionate, low-shedding companions is the right fit for your home.

Breed Overview

Devon Rex Cats

Origin and History The Devon Rex breed originated in 1960 in Devon, England, from a stray cat's litter that included a curly-coated kitten named Kirlee. Genetic testing later confirmed that the mutation causing Kirlee's coat was different and recessive compared to the Cornish Rex, establishing it as a distinct breed. Kirlee became the foundation sire. The breed gained formal recognition in the UK during the 1960s and in the United States in the 1970s.

Physical Characteristics

• Weight: 6-9 pounds (2.7-4 kg)
• Length: 12-16 inches (30-40 cm)
• Coat: Short, soft, and curly with a rippled, windswept appearance.
• Colors & Patterns: All colors and patterns are accepted.
• Eyes: Large, oval, and wide-set; eye color can vary.
• Distinctive Features: A pixie-like face with very large, low-set ears.
• Lifespan: 10-15 years
• Body Type: Medium-sized, slender, and athletic.

Cornish Rex Cats

Origin and History The Cornish Rex story began in 1950 in Cornwall, England, when a barn cat named Serena gave birth to a curly-coated male named Kallibunker. This was a spontaneous natural mutation. Recognizing its uniqueness, the owner worked with geneticists to develop the breed, which was named for its origin (Cornish) and coat type (Rex). It achieved championship status in both the UK and the US during the 1960s.

Physical Characteristics

• Weight: 6-10 pounds (2.7-4.5 kg)
• Length: 12-16 inches (30-40 cm)
• Coat: Short, incredibly soft, with tight, uniform marcel waves.
• Colors & Patterns: All colors and patterns are accepted.
• Eyes: Medium to large and oval; color corresponds with the coat.
• Distinctive Features: A whippet or greyhound-like body with a distinctly arched back.
• Lifespan: 12-16 years
• Body Type: Small to medium, slender, and elegant with fine bones.

Understanding the Rex Mutations: A Genetic Breakdown

Genetic Differences

Cornish Rex Gene (Re)

• Type: Dominant gene.
• Effect: Affects only the guard hairs, leaving a coat composed solely of the soft undercoat.
• Result: Produces tight, consistent marcel waves.

Devon Rex Gene (re)

• Type: Recessive gene.
• Effect: Affects all three hair types (guard, awn, and down), modifying and shortening them.
• Result: Creates looser, more rippled waves and a potential for sparse patches.

Key Takeaway: These mutations occur on different chromosomes. Breeding a Devon Rex with a Cornish Rex produces straight-coated kittens, proving the breeds are genetically distinct and must be developed separately.

Temperament and Personality Face-Off

Devon Rex Personality

The Impish Companion: Often described as elfin or pixie-like, Devons are mischievous, curious, and endlessly entertaining. They maintain a kitten-like playfulness throughout their lives.

The Ultimate People-Cat: They form exceptionally strong bonds with their families, preferring to be involved in all activities. It's common for them to ride on shoulders, sleep under covers, and follow their owners from room to room.

Intelligent & Social: Highly trainable and smart, they enjoy learning tricks and playing fetch. They are typically very outgoing with guests, children, and other pets.

Cornish Rex Personality

The Athletic Acrobat: This breed is known for its high energy, incredible agility, and love of heights. They are often found perched on top of doors, cabinets, and tall cat trees.

The Affectionate Heat-Seeker: Profoundly devoted and "dog-like" in loyalty, Cornish Rex cats crave human companionship. Their thin coat drives them to seek warmth, often burrowing under blankets or basking in sunbeams.

Confident & Inquisitive: They are intelligent, curious, and generally confident with new people and situations, though they love being the center of attention.

Temperament Summary

Trait	Devon Rex	Cornish Rex
Energy Level	High	Very High
Playfulness	Very High	Very High
Affection Level	Very High	Very High
Intelligence	Very High	Very High
Independence	Low	Low
Vocalization	Moderate (soft voice)	Moderate (quiet voice)
Good with Children	Excellent	Excellent
Good with Other Pets	Excellent	Very Good
Social Nature	Very Outgoing	Outgoing & Confident

Coat, Grooming, and Care

Devon Rex Coat & Care

• Texture: Loose, rippled waves; feels like crushed velvet or lamb's wool.
• Grooming: Minimal. Wipe with a soft cloth or chamois. Occasional bathing (monthly) helps manage skin oils.
• Special Note: Their thin coat offers little insulation. They may need sweaters in cold climates and protection from sun exposure.

Cornish Rex Coat & Care

• Texture: Tight, uniform marcel waves; feels like silk, chenille, or rabbit fur.
• Grooming: Minimal. Gentle brushing with a soft brush or cloth. Bath only as needed to control oils.
• Special Note: Lacks guard hairs entirely, making them highly sensitive to temperature and sunburn. Indoor-only living is non-negotiable.

Coat Comparison

Aspect	Devon Rex	Cornish Rex
Wave Pattern	Loose, rippled, tousled	Tight, even marcel waves
Hair Structure	All three types (modified)	Undercoat only
Texture	Velvety, soft	Silky, ultra-soft
Shedding	Very Low	Very Low
Hypoallergenic	Often better tolerated	Often better tolerated
Cold Sensitivity	High	High

Health, Lifespan, and Considerations

Devon Rex Health

• Lifespan: 10-15 years.
• Primary Concern: Devon Rex Myopathy (Spasticity), a genetic muscle disorder. Reputable breeders must perform DNA testing.
• Other Considerations: Potential for Hypertrophic Cardiomyopathy (HCM), patellar luxation, and skin conditions due to their thin coat.

Cornish Rex Health

• Lifespan: 12-16 years.
• Overall Health: Generally robust with fewer breed-specific issues.
• Considerations: Screen for HCM, watch for patellar luxation, and provide diligent dental care. Their skin is also sensitive.

Health Comparison

Health Factor	Devon Rex	Cornish Rex
Overall Robustness	Good	Very Good
Key Genetic Concern	Myopathy (test available)	Fewer breed-specific issues
Essential Screening	DNA test for Myopathy	Cardiac screening for HCM
Skin Care	Important	Important

Lifestyle, Exercise, and Costs

Living Environment

Both breeds require an indoor-only lifestyle due to temperature sensitivity and sunburn risk. They thrive in warm homes with plenty of vertical space (cat trees, shelves) for climbing and exploration.

Exercise Needs

• Devon Rex: High energy. Needs 2-3 interactive play sessions daily with puzzles and climbing.
• Cornish Rex: Very high energy. Requires multiple vigorous play sessions and loves high-altitude climbing.

Cost Comparison (2026 Estimates)

Costs are very similar for both breeds.

• Initial Kitten Cost: $800 - $2,500 from a reputable breeder.
• Annual Ongoing Costs: $1,350 - $2,750 (food, vet care, insurance, supplies).
• Lifetime Estimate (14 years): $22,300 - $45,800, including an emergency fund. Always prioritize breeders who perform full health screenings and genetic tests.

Which Breed Is Right For You?

Choose a Devon Rex If You Want:

• A mischievous, pixie-like companion with intense devotion.
• A cat that loves to cuddle, sleep in your bed, and ride on your shoulder.
• A playful, social cat that gets along with everyone.
• To manage potential allergies with a low-shedding breed.

Choose a Cornish Rex If You Want:

• An elegant, athletic acrobat that loves high places.
• A "heat-seeking missile" that will burrow under blankets with you.
• A highly energetic, intelligent cat that enjoys vigorous play.
• A breed with minimal grooming and generally robust health.

Conclusion

Both the Devon Rex and Cornish Rex offer unparalleled companionship with their affectionate natures, intelligence, and unique curly coats. Your choice ultimately hinges on personal preference: the impish, deeply bonded charm of the Devon versus the elegant, athletic exuberance of the Cornish.

The most critical step for any prospective owner is to seek a reputable, ethical breeder who prioritizes health testing, especially for Devon Rex Myopathy. With a commitment to providing a warm, engaging, indoor-only home, either of these remarkable breeds will reward you with years of laughter, love, and delightful antics.

---

Disclaimer: Individual cats may vary. This guide is for informational purposes. Always conduct thorough research and choose a breeder who performs all recommended genetic and health screenings for their breeding cats.