Top 5 Large Cat Breeds

ImmunityTop PicksMeongsiljang Veterinary Advisory Board

We’ve compared the weight, temperament, and genetic diseases of five large cat breeds—Maine Coon, Ragdoll, Norwegian Forest Cat, Savannah, and Ragamuffin—and outlined the essential health care points for these large breeds.

Large Cat Breeds: Which Breeds Are There and What Should You Pay Attention To?

A large cat sitting on top of a cat tower

Large cat breeds are those that typically weigh over 6 kg (13.2 lbs) as adults and can measure more than 90 cm (35.4 inches) from nose to tail tip. What’s truly important is that each breed is prone to different genetic conditions. For example, Maine Coons and Ragdolls are susceptible to hypertrophic cardiomyopathy, while Norwegian Forest Cats are vulnerable to glycogen storage disease. In this article, we’ll compare the weight, temperament, and health considerations of five representative large cat breeds at a glance.

No. 1: Maine Coon — The Gentle Giant

The Maine Coon is the quintessential large cat breed. Males can weigh 6–10 kg, and some individuals exceed 100 cm in body length. True to their nickname, “gentle giants,” they have a mild temperament and are very people-oriented.

Weight: Males 6–10 kg, females 4–7 kg

Temperament: Gentle and sociable, tending to follow their owners closely

Health concerns: Hypertrophic cardiomyopathy, hip dysplasia, polycystic kidney disease

According to veterinary cardiology textbooks, the Maine Coon is a representative breed with a confirmed genetic predisposition to hypertrophic cardiomyopathy (the A31P mutation in the MYBPC3 gene). For breeding purposes, commercial genetic testing is recommended, and cats identified with this genetic predisposition should undergo annual cardiac ultrasound examinations. However, even cats that test negative for the mutation can develop the disease later in life, so regular cardiac ultrasound screening remains the most reliable diagnostic method.

No. 2: Ragdoll — The Large Breed That Goes Limp When Held

The Ragdoll gets its name from its tendency to go limp and relax completely when held. Weighing 6 to 9 kg for males, it is a large breed, second only to the Maine Coon.

Weight: Males 6–9 kg, females 4–6 kg

Temperament: Laid-back and gentle; friendly toward children and other pets

Health concerns: Hypertrophic cardiomyopathy, bladder stones, obesity

Ragdolls are genetically predisposed to hypertrophic cardiomyopathy (HCM). Along with Maine Coons, they are a primary breed in which the MYBPC3 gene mutation (specifically R820W in Ragdolls) has been identified. Commercial genetic testing is recommended before breeding, and cats with a genetic predisposition should undergo annual cardiac ultrasound examinations. Even if genetic testing is negative, the disease can still develop later in life, so regular cardiac ultrasound screenings remain essential.

A blue-eyed Ragdoll cat nestled comfortably in someone’s arms

No. 3: Norwegian Forest Cat — The Wild Beauty of Northern Europe

The Norwegian Forest Cat is a breed adapted to the cold climates of Northern Europe, known for its luxurious double coat and sturdy bone structure. Weight: Males 5–9 kg, females 4–6 kg Temperament: Independent yet affectionate with their owners; highly active Health concerns: Glycogen storage disease, hypertrophic cardiomyopathy, hip dysplasia According to veterinary cardiology textbooks, the Maine Coon and Ragdoll are the primary breeds with confirmed genetic predispositions to hypertrophic cardiomyopathy (HCM) and validated commercial genetic tests; these tests are not applicable to other breeds. Although the Norwegian Forest Cat is not currently included in validated genetic screening programs, HCM remains the most common myocardial disease in cats, so regular cardiac ultrasound examinations are recommended to monitor your cat’s heart health.

Norwegian Forest Cats with their luxurious double coat

No. 4: Savannah — The Breed with Wild Bloodlines

The Savannah is a breed created by crossing the serval, a wild cat, with the domestic cat. Body weight varies significantly depending on the generation (F1–F5), with F1 Savannahs weighing up to 8–11 kg.

Weight: F1 8–11 kg; F5 and later 5–8 kg

Temperament: Highly curious and energetic. They love high places, and many individuals enjoy playing in water.

Health concerns: Progressive retinal atrophy. Although not listed in veterinary cardiology textbooks as a breed requiring screening for hypertrophic cardiomyopathy, regular health check-ups are recommended for all breeds.

Savannahs are extremely active, so ample exercise space and vertical play environments are essential. In Korea, breeding restrictions may apply depending on the generation, so be sure to verify this before adoption.

No. 5: Ragamuffin — The Soft Doll Cat

The Ragamuffin is a breed derived from the Ragdoll, known for its wide variety of coat colors and soft fur. Males typically weigh between 5 and 9 kg, classifying them as a large breed.

Weight: Males 5–9 kg, females 4–7 kg

Temperament: Extremely gentle and docile; often referred to as a "doll cat"

Health concerns: Hypertrophic cardiomyopathy, polycystic kidney disease, obesity

Ragamuffins love to eat and tend to be less active, making weight management especially important. Regular weigh-ins and maintaining appropriate feeding amounts are key to keeping them healthy.

At-a-Glance Comparison of 5 Large Cat Breeds

Item	Maine Coon	Ragdoll	Norwegian Forest	Savannah	Ragamuffin
Male Weight	6-10kg	6-9kg	5-9kg	5-11kg (by generation)	5-9kg
Personality	Gentle/sociable	Easygoing/docile	Independent/affectionate	Curious/active	Gentle/obedient
Coat Care	Brush 2-3 times/week	Brush 2 times/week	Brush 3+ times/week	Brush once/week	Brush 2 times/week
Diseases to Watch	Cardiomyopathy, hip dysplasia	Cardiomyopathy, bladder stones	Glycogen storage disease, cardiomyopathy	Progressive retinal atrophy	Cardiomyopathy, obesity
Growth Completion Time	3-4 years	3-4 years	About 5 years	2-3 years	3-4 years

Based on breed standards; individual variation may occur

Heart Screening Is Essential for Large Breeds

Hypertrophic cardiomyopathy is the most common heart muscle disease in cats, with Maine Coons and Ragdolls being prime high-risk breeds due to a confirmed genetic predisposition (MYBPC3 mutation). Veterinary cardiology textbooks recommend that cats with a genetic predisposition (positive genetic test results) undergo annual echocardiograms. Even if a genetic test is negative, the disease can still develop later in life, so please don’t skip regular echocardiographic screenings, even if your cat shows no symptoms.

Health Care Points for Large Cats

Large cat breeds require extra attention to joint and weight management due to their size. Because they have a longer growth period than average cats (three to four years for Maine Coons, for example), proper nutritional care during this phase is essential.

Weight Management: Larger breeds are at higher risk of obesity. Monitor your cat’s weight regularly and assess their body condition score.

Joint Care: Place non-slip mats on cat trees and stairs to reduce stress on their joints.

Coat Care: Many large breeds have long or semi-long hair, so brush them two to three times a week to prevent matting.

Regular Check-ups: We recommend annual heart ultrasounds and blood tests, at least once a year.

A large cat relaxing while being brushed

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Can I keep a large cat in an apartment?

Yes, it’s possible. However, highly active breeds like Savannahs require ample space and vertical play environments. Maine Coons and Ragdolls, on the other hand, tend to adapt well to apartment living.

Do large-breed cats have shorter lifespans than regular cats?

Not necessarily. With early detection and consistent management of genetic conditions, your pet can enjoy a long, healthy life together with you. Since individual variation is significant, regular check-ups and preventive care are far more important than trying to predict a specific lifespan.

Is there a separate cat food for large cats?

Some brands offer formulas specifically designed for large-breed dogs. While standard dog food is acceptable, choosing a diet that includes ingredients to support joint health is a good idea. Please consult your veterinarian to determine the appropriate feeding amount based on your dog’s weight.

Where can I get a genetic test for hypertrophic cardiomyopathy?

You can request genetic testing through your veterinarian. Commercial genetic tests are available specifically for Maine Coons and Ragdolls. However, even if the genetic test result is negative, the disease may still develop later in life, so it is recommended to also undergo regular cardiac ultrasound examinations.

Are large cats difficult to keep together in a multi-cat household?

It depends on the breed's temperament. Ragdolls and Ragamuffins tend to get along well with other pets, whereas Savannahs are more independent and territorial, so introducing them to other animals may take longer.

Primary vs. Secondary Veterinary Hospitals: A Comparison

Comparing Dog Vaccine Types (3-way, 5-way, 7-way): Differences and How to Choose

Pet Insurance Enrollment Timing Comparison: When Is the Most Advantageous Time to Enroll?

Can You Trust Online Pet Food Grading Charts? — A Veterinarian’s Real Selection Criteria for 2026

My Senior Cat Won’t Eat — A Complete Guide to Choosing Food for Cats with Weak Digestion

Top 5 Medicated Dog Shampoos — For Pyoderma and Bacterial Infections

Top 5 Cat Kidney Supplements Recommended for 2026

Top 5 Dog Probiotics Recommended for 2026 — Selection Criteria from Veterinarians

When Should You Switch to Senior Dog Food? — 5 Selection Criteria from a Veterinarian

Top Recommended Prescription Renal Diets for Cats and Key Selection Criteria

References

[1] Textbook of Cardiovascular Medicine in Dogs and Cats — Chapter 11: Feline Cardiomyopathies, Virginia Luis Fuentes et al.

[2] The Cat: Clinical Medicine and Management, 2nd Edition — Chapter 46: Neonatal and Pediatric Care, Susan Little

[3] Bonne G et al. (1998) — Sarcomeric protein mutations in hypertrophic cardiomyopathy