1 breeder is on record here.
Medium-sized pointed cat representing the traditional Siamese type. Less extreme features than modern Siamese.
Represents the traditional or 'old-style' Siamese that existed before selective breeding created the modern extreme type. Sometimes called Wichian Mat. TICA recognized as separate breed.
Generally described as active, social, intelligent, affectionate, playful and vocal.
That is the breed in general, not a promise about one animal. Ask the breeder what their own line is like, and meet the parents before you decide.
Breed reference from The Cat API.
Nobody has written this side yet. It is a judgement rather than data, so it waits for a person — not for a missing source.
Drawn from sources, not opinion: FIFe breed standard; The Cat API. An empty column means we hold nothing for that side, not that there is nothing to say.
The Thai standard is published by the FIFe (Fédération Internationale Féline), the international federation of pedigree-cat clubs, and it is what show judges apply. This section sums up what it says about coat and colour. It does not assess any one animal: use it to know what to ask the breeder.
Short.
Fine, glossy and smooth.
Slight undercoat.
Shortened from FIFe standard THA — each label is the standard’s own wording with the verdict lifted into the tag beside it. Read the full clause at source. FIFe lists this standard’s last modification as 2018. Text read on 31 Aug 2026.
The colour varieties FIFe recognises for this breed are listed, with their EMS codes, in the table at the end of its standard. FIFe describes each colour group in the General Part of its standards.
The colours and patterns the standard admits, and what it prefers, discourages or disqualifies in each. An accepted colour says nothing about health. Quotations from the FIFe are in English, as the standard publishes them; the headings are ours.
Nothing hereditary is documented for the Thai breed, but there is still specific documentation to request from any breeder before paying a deposit. A responsible breeder will have these readily available; deflection is a red flag.
Thai (old-style Siamese) is a separate TICA breed from the modern Siamese, and the hereditary disease documented at meaningful frequency in modern Siamese — chiefly progressive retinal atrophy (PRA-rdAc/CEP290, whose allele frequency in Siamese is roughly 33%) — is not documented in Thai. A 2021 study of Thai pedigrees analysed kinship and inbreeding, not disease; its background section states that Thai cats are essentially free of the hereditary diseases of the contemporary Siamese except for isolated cases, which is the authors' statement rather than a result. The only open genotype figure is tiny: none of 8 Thai cats carried GM1 gangliosidosis in a 2022 screen of over 11,000 cats.
What to ask for anyway
Breed-level information from The Cat API. It describes the Thai in general; any individual animal can differ.
