Korat Cat

The Korat is a natural Thai breed with a compact, muscular body and a short blue coat tipped with silver that catches the light. People are drawn to it for that silvery sheen, the large luminous green eyes, and a temperament that leans affectionate and people-focused rather than aloof. It is also an uncommon breed outside Thailand, which is part of the appeal and part of why buyers do their homework on breeders. The famous green eye colour tends to arrive slowly, often over the first few years. It is a robust cat in general, but there are two inherited conditions worth knowing about before you buy.^{1, 2, 3, 4}

• Origin: Thailand, known there as the Si-Sawat^{1, 2}
• Size and weight: small to medium. Females often around 2.7 to 3.6 kg, males commonly around 3.6 to 4.5 kg or more, varying by individual¹
• Coat: short, close-lying blue with silver tipping. This is the only accepted colour in major breed standards^{1, 2}
• Eye colour: luminous green preferred. Kittens may start blue, then move through yellow and amber before turning green as they mature, often at two to four years²
• Temperament: intelligent, people-attached, playful. Often prefers close companionship and can be sensitive to being left out¹
• Life expectancy: commonly into the mid-teens or longer with good care¹
• Grooming: low. Weekly brushing is usually plenty¹
• Known inherited health risks: GM1 and GM2 gangliosidosis. Genetic tests are available and responsible breeders screen for them^{3, 4, 5}

History and Origin

The Korat is an imported, natural breed from Thailand, long valued in its homeland and often linked with traditions of good fortune. Outside Thailand it remains relatively uncommon, which is part of the appeal and part of why careful breeder selection matters.¹

In Western cat registries, the Korat is treated as a distinct breed with a strict colour requirement of blue with silver tipping only. Outcrossing is not accepted in major standards, which helps preserve the breed's look but also means genetic health management needs to be deliberate and transparent.^{1, 2}

Appearance and Physical Characteristics

A Korat's silhouette is compact and muscular, and it often weighs more than it looks when you lift one. The head is a defining feature, with a heart-shaped outline, pronounced brow ridges, and large, round eyes when fully open.¹

The coat is short and close-lying, showing the muscle underneath. The colour is not a range. It is specifically blue with silver tipping, which gives a soft sheen, especially in good light.^{1, 2}

Many people expect instant green eyes because that is how adult Korats are photographed. In reality, eye colour develops over time. Kittens may begin with blue eyes, then shift through yellow and amber shades, with the preferred luminous green often not settling until maturity, commonly around two to four years.²

Temperament and Personality

Korats are typically social and people-focused. They often choose a favourite person, stay close, and join whatever is happening, quietly but with intent. Many are lively and intelligent, enjoying interactive play and mental challenges rather than endless independent activity.¹

They can be sensitive to household noise and disruption. That does not mean they cannot live with children or other pets, but it does mean the gentlest introductions tend to work best. Steady routines, safe hiding places, and play that does not corner them all help.¹

Is a Korat Right for You?

A Korat suits homes that want a companion cat rather than a purely independent presence. They are typically affectionate and playful, and many do well with respectful children and other animals, provided introductions are slow and the cat has control over distance and escape routes.¹

If your household is empty all day and lively all night, plan ahead. Korats want companionship and can become withdrawn if routinely ignored, so enrichment and predictable attention matter more than fancy accessories.¹

Training and Exercise

Korats enjoy interactive play, and short, frequent sessions suit them well. Many will happily chase, pounce, and climb, then return to watch from a high perch. Puzzle feeders and rotating toys help keep their sharp minds busy.¹

Training is usually less about obedience and more about cooperation: coming when called, accepting handling, entering a carrier calmly. Gentle repetition and food rewards tend to work better than pressure, especially with a breed that can withdraw when overwhelmed.¹

Health and Lifespan

You will often see Korats described as having no breed-specific health issues. That is too broad. While many Korats are healthy, the breed is known to carry two serious inherited neurodegenerative diseases, GM1 and GM2 gangliosidosis, both inherited in an autosomal recessive pattern. Genetic tests are available, and reputable breeders use them to avoid producing affected kittens.^{3, 4, 5}

The gangliosidoses are progressive, fatal neurological conditions caused by enzyme deficiencies that lead to abnormal storage of certain lipids in nerve tissue. In affected Korat kittens, signs typically begin very young and progress over months.^{3, 4, 6}

• GM1 gangliosidosis: documented in Korats. Onset can be around a few months of age, with progressive neurological decline and premature death.^{3, 5}
• GM2 gangliosidosis: also affects Korats. Likewise progressive and severe, with a recessive inheritance pattern, so carriers are clinically normal.⁴

If you are speaking with a breeder, ask to see written proof of DNA test results for both parents, or for the kitten, depending on the breeding program. For recessive diseases, tested clear matings, or carrier crossed with clear, are how breeders avoid affected kittens.³

With good care, many Korats live comfortably into the mid-teens or longer. Like any cat, a Korat benefits from routine veterinary care and parasite prevention matched to your local risks. If your cat's vaccination history is unknown, vets often recommend a restart course before mixing with other cats.^{1, 7}

In Australia, core cat vaccination is commonly framed as the F3 vaccine, with boosters every one to three years depending on the product used and the individual cat's circumstances, as advised by your vet.^{7, 8} Microchipping is widely recommended too, because it dramatically improves the chance of reunion if a cat is lost. Just as important, keep your contact details current on the registry.⁹

Grooming and Care

The Korat's coat is straightforward: short, close, and usually low-shed compared with longer-coated breeds. A gentle weekly brush removes loose hair and is often enough to keep the coat glossy.¹

A Few Things Worth Knowing

• If you are buying for showing, the essentials are strict: the correct blue coat with silver tipping, the characteristic head shape, and eye colour that matures over time. Kittens may show ghost markings and may not yet have fully green eyes, which is normal development rather than a fault.²
• Whether you plan to show or not, health transparency is the more important question. For Korats, that means documented testing for GM1 and GM2 gangliosidosis in the breeding lines.^{3, 4}
• Many famous Korat claims online are muddled or plainly wrong. Greyfriars Bobby, for example, was a dog, not a Korat, so it does not belong in the breed's story. The most reliable sources for the Korat's Thai origin and defining traits are formal breed registries and standards.^{1, 2}

The Bottom Line

The Korat is a quietly striking cat: a silver-blue coat, bright eyes that deepen with age, and a dense, athletic body. In the home, many are devoted, observant, and keen for companionship without being relentlessly demanding.¹

The practical takeaway is simple. Treat rare as a prompt to check paperwork. Verify colour and standard if that matters to you, and verify genetic screening for GM1 and GM2 if you are buying from a breeder. With that groundwork done, you are left with a Korat being a Korat, quietly present in every room.^{3, 4}

References

1. The International Cat Association (TICA), Korat (breed information and standard overview)
2. Cat Fanciers' Association (CFA), Korat (breed profile and standard notes on coat and eye colour)
3. UC Davis Veterinary Genetics Laboratory, Korat GM1 Gangliosidosis (DNA test information)
4. UC Davis Veterinary Genetics Laboratory, Korat GM2 Gangliosidosis (DNA test information)
5. PubMed, Beta-galactosidase deficiency in a Korat cat: a new form of feline GM1-gangliosidosis
6. Universities Federation for Animal Welfare (UFAW), Korat: GM1 gangliosidosis
7. RSPCA Knowledgebase, What vaccinations should my cat receive?
8. Cat Protection Society of NSW, Vaccinations factsheet (notes on AVA guidance and F3)
9. RSPCA Australia, Microchipping