Rex · Rank #18 Most Popular Cat Breed
Cornish Rex
The Cornish Rex originated in Cornwall, England in 1950 from a natural mutation that produces a distinctive wavy, curly coat consisting only of the soft undercoat layer. The breed has a slender, arched body, large ears, and an egg-shaped head that gives it an otherworldly appearance. Cornish Rex cats are playful, agile, and thrive on human interaction, retaining a kitten-like exuberance throughout their lives.
Ideal Weight
2.5-4.5 kg
Height
28-38 cm
Activity Level
High (Working/Athletic)
Life Expectancy
11-15 yrs
Feeding Guide
Like the Sphynx, the Cornish Rex has a higher metabolic rate partly due to its minimal coat, requiring more calories than average to maintain body temperature. A high-protein, calorie-appropriate diet supports their active lifestyle. Meals should still be portion-controlled to avoid weight swings.
Water Needs
Cornish Rex cats are active and benefit from consistent water availability. Fresh water or a fountain should always be accessible; this breed's higher metabolic activity means hydration is particularly important for overall health.
Exercise Guide
Cornish Rex cats are extremely active and playful, requiring 30 or more minutes of vigorous interactive play each day. They excel at leaping, acrobatics, and fetch-style games. Environmental enrichment such as climbing structures, tunnels, and rotating toys is highly recommended.
Common Health Issues in Cornish Rexs
- Hypertrophic cardiomyopathy
- Hypotrichosis (coat thinning)
- Dental disease
- Patellar luxation
- Skin sensitivity
These are conditions commonly associated with the breed, not a diagnosis for your individual pet.
Cornish Rex Calorie Calculator
Estimated Daily Calories
268 kcal
0.8
Cups / day
92
Grams / day
Based on a generic 350 kcal/cup food. Use the full Calorie Calculator to enter your food's exact calorie density.
Cornish Rex FAQs
How much should I feed a Cornish Rex?
Like the Sphynx, the Cornish Rex has a higher metabolic rate partly due to its minimal coat, requiring more calories than average to maintain body temperature. A high-protein, calorie-appropriate diet supports their active lifestyle. Meals should still be portion-controlled to avoid weight swings. For a personalized daily calorie and portion estimate based on your Cornish Rex's exact weight, age, and activity level, use the calculator above or our full Calorie Calculator.
How much exercise does a Cornish Rex need?
Cornish Rexs generally have high exercise needs. Cornish Rex cats are extremely active and playful, requiring 30 or more minutes of vigorous interactive play each day. They excel at leaping, acrobatics, and fetch-style games. Environmental enrichment such as climbing structures, tunnels, and rotating toys is highly recommended.
How much water does a Cornish Rex need?
Cornish Rex cats are active and benefit from consistent water availability. Fresh water or a fountain should always be accessible; this breed's higher metabolic activity means hydration is particularly important for overall health. As a general guideline, most cats need roughly 50-60 ml of water per kg of body weight daily -- use our Water Intake Calculator for an estimate based on your pet's exact weight.
What health issues are common in Cornish Rexs?
Cornish Rexs are commonly associated with Hypertrophic cardiomyopathy, Hypotrichosis (coat thinning), Dental disease, Patellar luxation, and Skin sensitivity. This is general educational information, not a diagnosis -- regular veterinary checkups are the best way to catch and manage breed-related conditions early.
How big does a Cornish Rex get?
A fully grown Cornish Rex typically weighs 2.5-4.5 kg (6-10 lbs) and stands about 28-38 cm (11-15 in) tall at the shoulder, with a typical life expectancy of 11-15 years.
Medical Disclaimer
This tool provides general, educational estimates and is not a substitute for professional veterinary advice, diagnosis, or treatment. Breed-based estimates for the Cornish Rex are general guidance and vary by individual dog or cat. Always consult your veterinarian about your pet's specific health needs before making changes to their diet, water intake, or care routine.
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From the Blog
Cornish Rex Feeding Guide
The Cornish Rex has a higher metabolic rate than most cat breeds due to its minimal insulating coat, meaning it needs more calories to maintain body temperature and energy levels. This guide covers daily feeding amounts, meal structure, and this breed's unique nutritional considerations.
Cornish Rex Ideal Weight Guide
The Cornish Rex's narrow, arched frame and minimal coat make body condition assessment distinctly different from most cats. This guide covers the ideal weight range in kg and lbs, how to score body condition on this slender breed, and how to spot both underweight and overweight signs.
Cornish Rex Growth Chart: What to Expect
Cornish Rex kittens grow quickly and reach their adult size by around 12 months. This guide charts what healthy growth looks like month by month, what the breed's slim, arched physique means for interpreting weight milestones, and when to call the vet.
How Many Calories Should a Cornish Rex Eat?
The Cornish Rex is one of the higher-energy cat breeds, with a slightly elevated metabolic rate and a highly active lifestyle that translates to above-average calorie needs for its size. This guide explains how to estimate daily requirements by weight, age, and activity.
Cornish Rex Kitten Guide
Cornish Rex kittens are extraordinarily playful, affectionate, and energetic from the start. This guide covers everything you need to know about feeding, growth milestones, socialisation, and veterinary care in the first year of a Cornish Rex kitten's life.
Cornish Rex Senior Care Guide
Cornish Rex cats live 11–15 years and retain their playful, kitten-like personality well into old age. This guide covers when the breed enters its senior phase, which health issues become more relevant with age, and how to adjust feeding and care for an aging Cornish Rex.
More Tools
Calorie Calculator
Full calorie calculator with custom food density.
Weight Checker
Check if your Cornish Rex is at a healthy weight.
Body Condition Score Calculator
Assess your Cornish Rex's body condition with a simple visual score.
Cat Age Calculator
Convert your Cornish Rex's age into human years.
Water Intake Calculator
Estimate how much water your Cornish Rex needs daily.
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