The Thai derives its name from Thailand, the Southeast Asian country formerly known as Siam, which is the breed's homeland and where these cats developed naturally over centuries. The name is pronounced TY (rhymes with sky), with a single syllable. This geographic designation clearly identifies these cats as originating from Thailand while distinguishing them from the modern Siamese breed that developed through Western breeding programs emphasizing extreme features. The Thai name honors the breed's geographic and cultural origins while creating distinct identity separate from the increasingly stylized Siamese breed that diverged from traditional type.
The breed is also commonly known as Traditional Siamese, emphasizing that these cats represent the original Siamese type found historically in Thailand before Western breeders modified the breed toward extreme features. This alternate name clearly communicates the breed's relationship to Siamese cats while distinguishing them from modern Siamese showing wedge-shaped heads, elongated bodies, and extreme features. The Traditional Siamese designation resonates with people familiar with old photographs and descriptions of Siamese cats from the late nineteenth and early twentieth centuries showing moderate, rounded builds rather than extreme type.
Another alternate name is Old-Style Siamese, similarly emphasizing that these cats maintain the historical Siamese appearance predating modern breeding for extreme features. Some literature refers to them as Classic Siamese or Applehead Siamese, with the latter term referencing their rounded head shape resembling apples in contrast to the wedge-shaped heads of modern Siamese. In Thailand, these cats are called Wichien Maat (เธงเธดเนเธเธตเธขเธฃเธกเธฒเธจ), meaning moon diamond or diamond of the moon, a poetic Thai name reflecting their cultural significance and beauty. The Wichien Maat designation connects them to their Thai cultural heritage and ancient origins.
The multiple names reflect the breed's complex relationship with modern Siamese. Essentially, Thai cats and Siamese cats are the same breed genetically and historically, with the distinction arising from divergent breeding philosophies during the twentieth century. Western breeders increasingly emphasized extreme features including elongated heads, large ears, and svelte bodies, creating the modern Siamese type. However, some breeders and fanciers preferred the original moderate type, working to preserve it. This preservation effort eventually led to formal recognition of the traditional type as the Thai breed, distinct from modern Siamese despite shared ancestry.
Major cat registries show divided recognition reflecting controversy about whether traditional and modern Siamese should be considered separate breeds or varieties within one breed. The International Cat Association granted Thai cats recognition as a distinct breed separate from Siamese in 2007, acknowledging the substantial differences between traditional and modern types. This recognition validated preservation efforts and provided framework for maintaining traditional Siamese characteristics under the Thai designation. However, The Cat Fanciers' Association does not recognize Thai as a separate breed, instead considering them simply as Siamese showing less extreme type. Other registries vary in their approach.
The controversy centers on whether breeding philosophy differences justify separate breed status when genetic and historical origins are identical. Supporters of separate breed status argue that traditional and modern types are sufficiently different in appearance and sometimes temperament to warrant distinction. Critics maintain they're simply varieties within one breed and that creating separate breeds from breeding philosophy differences is unnecessarily divisive. This debate continues unresolved, with the Thai name serving as the primary designation for the traditional type in registries recognizing them separately while traditional-type cats compete as Siamese in registries not recognizing the distinction.
The Thai name clearly identifies these cats as representing the original Siamese type from Thailand, maintaining moderate, rounded features that characterized the breed for centuries before Western breeding programs created the modern extreme Siamese type, providing distinct identity while honoring their ancient heritage and cultural significance in their homeland.

