what was the biggest house cat in the world
If you mean the biggest house cat ever recorded by overall length, the answer is Stewie, a Maine Coon formally named Mymains Stewart Gilligan. Stewie measured 123 centimeters (48.5 inches) from the tip of his nose to the tip of his tail when fully stretched out. Guinness World Records verified the measurement in Reno, Nevada, on August 28, 2010.
Stewie was an extraordinary example of how large a domestic cat can become. He was nearly 4 feet long when measured from nose to tail and was substantially longer than an average house cat. He remained the Guinness World Records holder for the longest domestic cat ever until his death in January 2013.
However, “biggest” can mean different things. A cat can be exceptionally long, tall, or heavy, so it is important to distinguish between those measurements.
Stewie was the longest house cat ever recorded
Stewie’s official record was based on length, measured from the tip of his nose to the tip of his tail while fully extended.
His official measurement was:
| Measurement | Stewie |
|---|---|
| Length | 123 cm |
| Length in inches | 48.5 inches |
| Length in feet | About 4 feet |
| Breed | Maine Coon |
| Location of measurement | Reno, Nevada |
| Date measured | August 28, 2010 |
| Owner | Robin Hendrickson and Erik Brandsness |
Guinness World Records identifies Stewie as the longest domestic cat ever recorded. He was a Maine Coon, a breed well known for its large size and long body.
Stewie’s size was not simply a result of having a large frame. His body and tail combined to produce an exceptional overall length.
How big was Stewie compared with a normal house cat?
Stewie was dramatically longer than a typical domestic cat.
Most house cats are nowhere near 4 feet long from nose to tail. Even large breeds such as Maine Coons generally do not approach Stewie’s record-breaking length.
This is one reason record cats should not be used as a standard for judging whether an ordinary pet cat is large or healthy. A cat can be perfectly healthy at a much smaller size.
Stewie was an unusual individual within an already large breed.
His record demonstrates the upper extreme of domestic-cat size rather than what owners should expect from their pets.
What breed was the biggest house cat?
Stewie was a Maine Coon.
Maine Coons are widely recognized as one of the largest domestic cat breeds. Guinness World Records has repeatedly featured Maine Coons among the cats that have achieved extraordinary length records.
The breed has a large, muscular body, long legs and a particularly long, full tail. Those characteristics can contribute substantially to overall nose-to-tail length.
Maine Coons also mature more slowly than many smaller domestic cats. Guinness notes that Maine Coons can continue growing until around 4 or 5 years old.
That does not mean every Maine Coon will become enormous. Individual genetics, sex, nutrition and overall health all influence a cat’s eventual size.
Was Stewie the tallest house cat?
No. The longest domestic cat and the tallest domestic cat are separate records.
The Guinness record for the tallest domestic cat ever belongs to Arcturus Aldebaran Powers, a Savannah cat. He measured 48.4 centimeters (19.05 inches) tall and was verified in Ann Arbor, Michigan, on November 3, 2016.
That means Stewie was the record holder for length, while Arcturus holds the record for height.
The distinction matters because a cat with a very long body is not necessarily the tallest cat.
Stewie versus Arcturus
| Cat | Record | Measurement | Breed |
|---|---|---|---|
| Stewie | Longest domestic cat ever | 123 cm (48.5 in) | Maine Coon |
| Arcturus | Tallest domestic cat ever | 48.4 cm (19.05 in) | Savannah |
Arcturus was unusually tall because Savannah cats have ancestry connected to the serval, a medium-sized wild African cat. TICA recognizes the Savannah as a domestic breed.
What happened to Stewie?
Stewie died in January 2013 at the age of eight after battling cancer.
Before his death, he had become more than just a record-holding cat. He was also trained as a therapy animal and visited people at a local senior center. Guinness reported that he was known for being social and comfortable around people.
His owner, Robin Hendrickson, had originally become interested in Stewie’s unusual size after people repeatedly commented on how large he was.
She eventually submitted him for consideration by Guinness World Records. After an earlier attempt that fell short, Stewie was successfully measured at 123 centimeters in 2010.
Did Stewie hold any other records?
Yes. Stewie also held the record for the longest tail on a domestic cat at one point.
Guinness reported that his tail measured 41.5 centimeters (16.3 inches).
His unusually long tail contributed to his extraordinary overall nose-to-tail measurement.
That record has since been surpassed. Guinness currently lists Mr. Pugsley Addams, a Maine Coon from Minnesota, as the record holder for the longest tail on a domestic cat ever, with a tail measuring 46.99 centimeters (18.5 inches), verified in February 2025.
This is another example of why “biggest cat” can be difficult to define. Different cats can hold records for different aspects of size.
Was Stewie heavier than every other house cat?
Not necessarily.
Stewie’s Guinness record was for length, not weight. There have historically been cats that were exceptionally heavy, but weight records are complicated because excessive body weight can represent obesity rather than unusually large healthy body structure.
A healthy large cat and an overweight cat are not the same thing.
For that reason, a cat’s weight should not be used by itself to determine whether it is “big.” Veterinarians generally consider body condition, muscle mass, frame size and overall health when assessing whether a cat is at an appropriate weight.
A very heavy cat is not automatically a giant breed cat.
What is the longest living domestic cat?
Stewie’s record was for the longest domestic cat ever, but other cats have held the title for the longest living domestic cat.
One notable example was Barivel, a Maine Coon from Italy. Guinness verified him at 120 centimeters (3 feet 11.2 inches) in length on May 22, 2018.
Barivel therefore came remarkably close to Stewie’s record.
Another famous Maine Coon, Ludo, measured 118.33 centimeters (3 feet 10.6 inches) and was recognized as the longest living domestic cat before Barivel took the title.
The history of the record shows just how consistently Maine Coons have appeared among the world’s longest domestic cats.
Why are Maine Coon cats so large?
Maine Coons are naturally large-bodied domestic cats.
They tend to have substantial bone structure, muscular bodies, long legs and long tails. Their thick coats can also make them look even larger than they actually are.
Their size is part of the breed’s established characteristics rather than simply the result of overfeeding.
Genetics plays an important role. A Maine Coon kitten from large parents may have a greater potential to become a large adult, but individual cats still vary considerably.
It is also important not to overfeed a kitten in an attempt to make it bigger. Excess calories can promote unhealthy weight gain rather than healthy development.
Can a normal house cat become as big as Stewie?
It is extremely unlikely.
Stewie was an exceptional cat even within a breed known for large size. Most domestic cats, including Maine Coons, will never approach 123 centimeters in total length.
Owners should therefore avoid comparing their cats with record holders.
A cat’s appropriate adult size depends on its genetics, breed, sex and individual development. The goal should be healthy growth and a healthy body condition rather than maximum possible size.
If a cat appears unusually small, large, thin or overweight, a veterinarian can assess whether its size is appropriate.
What is the biggest domestic cat breed?
The Maine Coon is commonly considered one of the largest domestic cat breeds, and Guinness describes Maine Coons as the largest domestic cat breed in its coverage of the 2025 longest-tail record.
Savannah cats can also be exceptionally tall, particularly because of their serval ancestry. Guinness records Arcturus, a Savannah, as the tallest domestic cat ever.
Other large breeds include the Ragdoll and Norwegian Forest Cat, but individual cats within any breed can vary considerably in size.
Breed averages are useful for understanding general characteristics, but they do not predict the exact size of an individual cat.
How long can Maine Coon cats grow?
Maine Coon cats can take several years to reach their full size.
Guinness notes that Maine Coons may continue growing until approximately 4 to 5 years old, considerably longer than many other domestic cats.
This prolonged growth period is one reason young Maine Coons can look surprisingly large compared with cats of the same age.
Growth should still be gradual and healthy. A kitten’s diet should provide appropriate nutrition for development without deliberately overfeeding it.
Is the world’s biggest cat a house cat or a wild cat?
That depends on what you mean by “house cat.”
The world’s largest cats overall include wild cats and hybrids that are vastly larger than domestic cats. Guinness, for example, lists Hercules, an adult male liger, as the largest living cat, at 3.33 meters (131 inches) long and 418.2 kilograms (922 pounds).
But Hercules is not a domestic house cat. He is a lion-tiger hybrid.
For domestic cats, Stewie’s 123-centimeter length is the relevant record.
This distinction is important because a domestic cat should not be compared directly with a lion, tiger or liger.
Are Maine Coon cats good house cats?
Despite their impressive size, Maine Coons can make affectionate companion animals.
Their large size does mean owners need to consider practical issues such as sturdy cat trees, appropriately sized litter boxes, large carriers and comfortable resting areas.
A Maine Coon does not need to become enormous to be a healthy or successful house cat. Its individual temperament and health are much more important than reaching a particular size.
Like any domestic cat, a Maine Coon needs appropriate nutrition, veterinary care, exercise, play, scratching opportunities and a safe environment.
Frequently Asked Questions
What was the biggest house cat in the world?
The longest domestic house cat ever recorded was Stewie, a Maine Coon formally named Mymains Stewart Gilligan. He measured 123 centimeters (48.5 inches) from nose to tail tip.
How long was the biggest house cat?
Stewie was 123 centimeters long, or 48.5 inches. That is just over 4 feet from his nose to the end of his tail when fully stretched.
What breed was the biggest house cat?
Stewie was a Maine Coon. Maine Coons are among the largest domestic cat breeds and have produced several record-setting cats.
What is the tallest house cat ever?
Arcturus Aldebaran Powers holds the Guinness record for the tallest domestic cat ever at 48.4 centimeters (19.05 inches). He was a Savannah cat.
Is the Maine Coon the biggest cat breed?
Maine Coons are generally regarded as one of the largest domestic cat breeds. They are particularly well known for their large bodies and long tails.
Can a Maine Coon get as big as Stewie?
Most will not. Stewie was an exceptional individual, even for a breed known for large size.
Who is the longest domestic cat living?
Guinness’s published record page lists Barivel at 120 centimeters as the longest domestic cat living, verified in 2018. Guinness also notes that records can change and are not necessarily published online immediately, so current record status should be checked with Guinness World Records.
Conclusion
The answer to “what was the biggest house cat in the world” depends on how size is measured, but the most famous record holder for overall length was Stewie, a Maine Coon who measured 123 centimeters (48.5 inches) from nose to tail tip. Guinness World Records verified his measurement in 2010.
Stewie was an extraordinary example of the size that a domestic cat can reach. His record is even more impressive because Maine Coons, although known for being large, do not normally grow anywhere near that length.
Other cats have set records for height, tail length and other measurements. Arcturus, for example, was taller than Stewie, while Barivel and Ludo were among the other exceptionally long Maine Coons.
For everyday cat owners, however, the healthiest cat is not necessarily the biggest one. A cat’s ideal size depends on its individual genetics, body structure and health—not on whether it can approach a world record.