History & Origin
The Cornish Rex began in 1950 with a curly red kitten named Kallibunker born to a Cornwall barn cat. Backcrossing to the mother fixed the trait. The breed reached the U.S. in 1957.
Temperament & Personality
Active, playful, social. Cornish Rex are athletic acrobats who love to climb and run.
Health Watchouts
Top conditions reported by CFA/TICA parent clubs, AAFP, the Winn Feline Foundation, and the Merck Veterinary Manual. Discuss screening with your vet — especially before breeding or insuring.
Hypertrophic cardiomyopathy (HCM)
Breed-elevated riskThickening of the left ventricular heart wall — the most common heart disease in cats. Lower than Devon Rex but still recommended to screen.
Screening: Annual echocardiogram from a board-certified cardiologist; DNA test where available (Maine Coon, Ragdoll)
Hypotrichosis
RareBald patches in some lines.
Screening: Pedigree review
Patellar luxation
Slight elevationKneecap dislocation.
Screening: Veterinary palpation
Periodontal disease
70%+ of cats by age 3Plaque hardens to tartar and inflames gums, leading to tooth loss and bacteremia.
Screening: Annual oral exam; daily brushing or VOHC-approved dental treats; professional cleaning every 1–2 years
Obesity
≈60% of indoor cats (AAHA)Excess weight increases risk of diabetes, arthritis, hepatic lipidosis and shortens lifespan by ~2 years.
Screening: Monthly body condition score (target 4–5/9); measure all food; structured play 2× daily
Enrichment & Play
Need significant athletic outlets.
- Tall cat trees
- Wall shelving
- Wand toys 2× daily
- Puzzle feeders
- Heated beds
- Companion cat
Nutrition
Daily calories: Adult: 220–290 kcal/day.
Higher metabolism due to thin coat.
Common allergens to watch: Beef.
⚠ Slim breed — body-score monthly.
Grooming & Coat Care
Wipe weekly with a soft damp cloth.
Cost of Ownership
Lifetime cost depends on lifespan, vet care, and litter/food choices. Try our Lifetime Cost Calculator →
Cost band for Cornish Rex: medium.
Living Situation Fit
Active warm households.
Choosing a Kitten
Pet-quality kittens $800–$1,500.
Frequently Asked Questions
Why does the Cornish Rex feel warm?
Their coat is just a thin layer of down — body heat radiates through more easily than coated cats. They're often called 'velvety hot water bottles.'
