The Vet’s Guide to Maine Coons: Facts, Care, and Nutrition Guide

Maine Coons are the gentle giants of the cat world, big, shaggy and famously dog-like in their devotion, with a distinctive chirp and a personality to match their size. 

They are the cat that follows you room to room, "talks" to you across the house, and somehow makes a home feel fuller just by being in it.

Whether you already share your home with a Maine Coon or you're weighing up whether one's right for you, this is your go-to guide to life with the breed, from just how big they really get and how to keep that magnificent coat, to the health conditions worth knowing and what to feed a cat this size.

Our approach covers all the ins and outs of your Maine Coon's health, from choosing the right nutrition for a large-breed cat to grooming that coat and supporting their long, healthy life.

The Maine Coon is a large, long-haired natural breed that originated in the northeastern United States, first recognised around the 1850s in the state of Maine, from which it takes its name (the bushy, raccoon-like tail gave the breed the second half of it). Its thick, water-resistant coat and tufted paws helped it survive harsh Maine winters, and it remains one of the oldest and largest domestic cat breeds.

Everything about the Maine Coon is built for size and weather: a long, rectangular body, a broad chest, a shaggy double coat that lengthens around the neck into a lion-like ruff, big tufted ears, and a long, flowing tail. They come in almost every colour and pattern, from the classic brown tabby to black, silver tabby, red, cream and blue.

Maine Coons are genuinely large, standing around 25 to 40 cm at the shoulder and weighing roughly 4.8 to 11.3 kg, with males at the heavier end and females lighter. The biggest individuals can measure close to a metre from nose to tail tip. They are also famously slow to mature, staying kitten-like for four to five months longer than most breeds and filling out in size and coat until around three to four years of age. It's worth remembering that a healthy Maine Coon is large and lean, big-framed and muscular, not overweight.

Maine Coons are intelligent, sociable and deeply people-focused, the kind of cat that wants to be wherever you are. They are playful and enjoy an active game, but just as happily settle in for a quiet cuddle on the couch, and their dog-like reputation is earned: many learn tricks, take to a harness, and greet visitors at the door.

They are also a notably vocal breed, "talking" in a distinctive chirp and trill rather than a typical meow, and they can be persistent when they want your attention. That easy, affectionate nature makes them a wonderful fit for families with children and other pets, though they are sociable cats that don't love being left alone for long stretches, so a household with company, or a second cat, suits them best.

Maine Coons don't need a rigorous exercise routine, but this clever breed does need regular play and mental stimulation to stay happy and out of mischief. Daily interactive play, cat toys, puzzle feeders and a tall cat tree to climb all give a big, intelligent cat something to do, and double as a way to keep a food-motivated breed active and lean.

That spectacular double coat is the Maine Coon's signature, and its main maintenance job. Neglected, it mats and becomes uncomfortable, so a regular routine matters more here than for most cats.

Brush around three times a week with a cat brush or dematting comb to keep the coat healthy, cut down excessive shedding, and prevent the mats that form behind the ears, in the armpits and along the belly. During the spring and autumn moults you'll want to brush more often, and a shedding comb or blade helps with the seasonal drop.

If you do find a mat, work gently:

• Check with your fingers first — feel for knots and tease them apart with minimal force before you brush.
• Use a soft-bristled brush — if a knot resists, brush carefully; if your cat gets stressed, stop and come back to it later.
• Reach for a detangler — stubborn mats may need a detangling tool or conditioner to loosen. Never pull on the skin, and only trim a severe mat out as a last resort.

Sudden heavy shedding or a coat that mats far more than usual can signal poor nutrition, stress or an underlying problem, so check in with your vet if the coat changes.

Maine Coons have all their adult teeth by around six months, so start dental care early. Brush their teeth at least once a week with a flavoured cat toothpaste and a pet toothbrush or finger brush, introduced gently so they get used to it, and back it up with dental treats. Beyond the mouth, keep up routine nail trims, check the big tufted ears for wax, and give a cat this size a large litter tray and a sturdy, tall scratching post.

Maine Coons are generally robust and long-lived, but as a large pedigree breed they face both inherited and lifestyle-related conditions. Because some inherited diseases come from recessive genes, knowing the medical history of a kitten's parents, and annual vet check-ups to catch problems early, both matter a great deal.

HCM, a thickening of the heart muscle that stops it pumping blood around the body effectively, is the most significant health concern in the breed and the most common heart disease in cats. 

It's most often seen in older Maine Coons, and the signs to watch for are lethargy, coughing and shortness of breath. Maine Coons can carry a specific genetic mutation linked to it, and there is a DNA test, so ask whether the parents have been tested. HCM can develop quietly and can't be cured, but its effects can often be managed, and sometimes slowed, with medication, a low-sodium diet and regular heart checks.

Because of their size, Maine Coons are more prone than most cats to hip dysplasia, where the hip joint develops abnormally and can lead to arthritis. Keeping your cat lean takes load off the joints, and reputable breeders may screen breeding cats for it.

SMA is an inherited condition, seen in the breed, in which the nerves of the spine that control the hind-leg muscles are gradually lost. The signs are visible muscle wastage in the hind legs, difficulty or an inability to jump, and a wobbly walk. It isn't painful, and while the progression can't be slowed, affected cats live comfortably with a few simple adjustments, keeping food, water, toys and a low bed within easy reach so they don't have to jump. A DNA test lets breeders avoid producing affected kittens.

PKD causes small fluid-filled cysts to form in the kidneys, and it can often be picked up as early as kittenhood. Left unmanaged, the cysts can grow over time and lead to kidney failure, with signs including weight loss, increased thirst, dry heaving and frequent urination. Regular veterinary check-ups and a well-balanced diet help catch and manage it early, and, like HCM and SMA, it can be screened for through responsible breeding.

Cats have a reputation for being untrainable, but Maine Coons are the exception, intelligent enough to learn commands, tricks and good household habits. Start early: a kitten takes to litter training, basic cues and house rules far more readily than a set-in-its-ways adult.

Get the litter tray right from day one: put it somewhere quiet and easy to reach, with a few centimetres of litter (cats dislike an overfilled tray), keep it clean, and reward correct use with a treat or praise. 

From there, reward-based methods work best, marking the behaviour you want with a clicker or a consistent word and following it with a high-value cat treat, play or praise, while simply ignoring what you don't want. Keep sessions short, a tired cat quickly loses interest.

Most Maine Coon behaviour issues are normal cat instincts that can be redirected rather than stopped.

• Scratching. Scratching is natural and can't be trained away, but it can be aimed. Provide sturdy scratching posts and boards so the urge lands on the right surface rather than your furniture.
• Noisiness. This is a talkative breed, and a vocal Maine Coon is usually telling you something, hunger, thirst, or a bid for attention. Meet the genuine needs, but if it's purely attention-seeking, reward the quiet and don't respond to the noise, or you teach them that loud works. Persistent, unexplained vocalising is worth a vet check.
• Territorial behaviour. Maine Coons can be territorial with other animals, especially if they weren't socialised young. Introduce kittens to other cats after their final vaccinations at around 16 weeks, and take introductions slowly, to build a confident, sociable adult.

As the largest cat breed, a Maine Coon has big nutritional needs, so feed a complete, balanced diet built around high-quality animal protein to fuel that large, muscular frame, with the vitamins, minerals and healthy fats that support a big cat, and match the amount to their life stage and body condition rather than their size alone.

A mix of wet and dry food gives a Maine Coon the best of both. Dry food is convenient and helps keep teeth cleaner between brushing, while wet food adds the moisture that cats, who often don't drink enough on their own, genuinely need. Feeding both covers hydration and nutrition, and most cats enjoy the variety.

Maine Coon kittens grow for far longer than the average cat, so they stay on a complete kitten (growth) formula for longer too, often to around nine to twelve months, before transitioning to adult food. Feeding for that extended development supports healthy growth without pushing weight on too fast.

A big cat needs more daily calories than a small one, but even a large Maine Coon can become overweight, so portion to a lean body condition rather than free-feeding. As a rough guide, many Maine Coons do well on around three smaller meals a day, roughly 14 to 26 grams per meal depending on the individual and the food, adjusted to keep them lean. Their long coat also means hairballs are a fact of life, so a hairball-control diet can help, alongside regular brushing.

Because the Maine Coon's size, coat and heart health all place specific demands on nutrition, some pet parents choose a diet formulated for the breed. Browse our cat food range for options at every life stage, and when in doubt, your vet can help match the food to your individual cat.

Given the breed's inherited health risks, health-focused breeding matters more here than looks or size, and a good breeder prioritises health, temperament and socialisation over producing the biggest possible cat.

A registered Maine Coon kitten in Australia typically costs several thousand dollars, and more for sought-after colours or lines. That price should buy peace of mind: look for a breeder who DNA and health tests for HCM, SMA and hip health, provides testing certificates and pedigree papers, raises kittens in the home with plenty of handling, and asks you questions about your setup. Be wary of anyone overpromising size, making vague health claims, or selling through classifieds or pet shops.

Before committing, ask your breeder:

• Have both parents been DNA tested for HCM, SMA and hip health?
• Can I meet the parents and see how the kittens are raised?
• How are the kittens socialised and prepared for home life?
• What support do you offer after the kitten comes home?

Purebred and Maine Coon-cross cats do turn up in rescues and shelters, so adoption is well worth considering, especially if you'd like an adult whose size and temperament you can already see.

Drawn to a big, fluffy, friendly cat but weighing your options? A few breeds that share the Maine Coon's size, coat or temperament:

• Norwegian Forest Cat — equally fluffy and rugged, but with a slightly more reserved nature.
• Ragdoll — a larger cat with a floppy, cuddly personality; very affectionate and people-focused.
• Siberian — a dense triple coat, solid build, and a playful, balanced temperament.
• Persian — very calm and affectionate, though it requires more grooming and has a flatter face.
• Turkish Angora — shares the Maine Coon's long, silky coat and playful, intelligent nature; both are affectionate and curious, though the Angora is typically more delicate and energetic.

A Maine Coon brings a lot of cat, and a lot of personality, into your home: intelligent, funny, devoted and unmistakably large. Keep that coat brushed, feed for a lean and muscular body, choose a health-tested kitten, and stay on top of heart and dental checks, and you'll have a magnificent companion for well over a decade. When in doubt about your individual cat, your vet is always the best place to start.