Giant Maine Coons: The Records, and What "Giant" Really Means
The verified biggest Maine Coons, the records the breed does not hold, and what to check before paying a cattery with "giant" in its name.
Published August 20, 2026Updated August 27, 2026 4 min read
Contents
Nobody googles "giant Maine Coon" by accident: either you have just seen a cat the size of a bobcat on your feed, or a cattery with "Giant" in its name is asking you for a deposit. This page serves both readers: the verified records first, then the honest translation of "giant" as a sales word, and the checks that protect your money.
The records a Maine Coon actually holds
Longest cat ever.
Stewie, of Reno, Nevada: 123 cm, 48.5 in, measured 2010, a record still standing. Guinness's own page: "Stewie was a Maine Coon."
Longest cat living.
Barivel, of Vigevano, Italy: 120 cm, 3 ft 11.2 in, verified 2018.
The living title's previous holder.
Ludo, of Wakefield, England: 118.33 cm, measured 2015. Maine Coons have passed this record among themselves.
Longest tail on a living cat.
Mr. Pugsley Addams, of Minnesota, a silver Maine Coon: 46.99 cm, 18.5 in, verified 2025.
And the honesty column: the tallest living cat is a Savannah, not a Maine Coon; and Guinness retired the heaviest category entirely (the historic holder, Himmy of Queensland, was a tabby, not a Maine Coon), so any "world's heaviest cat" claim you read is running on a dead record. Internet-famous giants live one tier below the record book: Omar, a ginger Maine Coon from Melbourne, was reported by the BBC at around 120 cm (about 47 in) when he went viral in 2017.
"Giant" is a sales word, not a variety
"Giant" is a sales word, not a variety
There is no giant Maine Coon breed, sub-breed, or registry class. Every registry recognizes ONE Maine Coon, and the standards do not even state a weight; several warn breeders against chasing size over soundness. What the ads call "giant", "XXL" or "Euro-size" is the large end of normal, packaged: real in the sense that big lines exist (UK listings market "XL" lines at a premium), and marketing in the sense that no registry defines, measures or certifies any of it. A seller can charge more for bigness; nobody can certify it, and the measured size story shows how far typical adults sit from the record book.
Before you pay a "giant Maine Coon" cattery
The search data behind this page is blunt: a large share of "giant maine coon" queries are people asking whether a specific grandly-named cattery is legitimate. We do not review individual sellers, and the good news is you do not need us to: legitimacy is checkable. The breeders guide carries the full checklist; the short version:
- A NAMED registry and verifiable papers ("registered" means nothing without the registry's name).
- Both parents -screened by , not a DNA test alone.
- A written contract and health guarantee.
- A seller who welcomes questions and shows you the cats.
One giant-specific addition: treat any promise of a guaranteed adult size as a red flag in itself. No registry certifies size, genetics does not deal in guarantees, and a seller promising 25 pounds is selling you a number nobody can deliver on demand.
Are giant Maine Coons dangerous?
No. Size is the only thing outsized about the breed: it is a domestic cat, bred and shown as a companion for 150 years, and the measured behaviour literature ranks it among the more people-seeking breeds, which is how "gentle giant" became its byname. A big Maine Coon needs bigger everything (carrier, litter box, cat tree budget), not bigger caution.
The vet's take
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Frequently asked questions
How big do giant Maine Coons get?
The verified extremes: 123 cm (48.5 in) nose to tail for the longest ever. Typical adults are far more modest; the measured ranges are on our size page.
How much does a giant Maine Coon cost?
"Giant" adds whatever the seller decides: no registry defines or certifies size, so the premium buys a word. Market-by-market real prices, from named sellers, are on the price page.
Is a cattery with "giant" in its name legitimate?
The name tells you nothing either way. Check what is checkable: registry papers, HCM screening of both parents by echocardiogram, a contract, and a seller happy to be questioned; the full checklist is in our breeders guide.
Are Maine Coons gentle giants?
The byname fits as well as bynames ever do: a people-seeking temperament in the measured behaviour surveys, in the largest domestic frame this side of the record book.
What is the biggest Maine Coon ever recorded?
By verified length, Stewie: 123 cm (48.5 in), Reno, Nevada, 2010. Guinness no longer records weight, so there is no current "heaviest" record holder of any breed.
Community questions
Got a question this page doesn't cover? Ask it: the best ones get published here with their answer.
This is information, not veterinary advice, and it cannot tell you what is wrong with your cat. Our rule is a simple one: if something is wrong with your cat, call your vet, and call an emergency clinic if it is out of hours. Nothing you read here is a reason to wait.
Medical information applies to every reader. Prices, legal duties and common practice do not: unless stated otherwise, they are given for the United States, and they differ in the UK, Canada and Australia, and often between states or provinces. Check with your own vet and your own local authority.
Our sources
- Guinness World Records: longest domestic cat ever (Stewie)
- Guinness World Records: longest domestic cat, living (Barivel)
- Guinness World Records: tallest domestic cat, living (a Savannah)
- Guinness World Records: longest tail on a domestic cat
- Guinness World Records, 2019: a history of big cats
- BBC News, 2017: Omar, "perhaps world's longest cat"
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