The German Rex derives its name from two key elements: "German" references the breed's geographic origin in Germany, while "Rex" indicates the genetic mutation causing the distinctive curly coat. The term "Rex" was borrowed from rabbit breeding, where it originally described a similar curly-coated mutation. When applied to cats, "Rex" became the universal designation for breeds displaying this wavy or curly coat characteristic, distinguishing them from cats with normal straight fur. The German Rex is recognized consistently by this name across all major cat registries including The International Cat Association (TICA) and the Fédération Internationale Féline (FIFe), though it's worth noting that The Cat Fanciers' Association does not recognize this breed separately.
The breed name is pronounced straightforwardly: "JER-man REX" in English, with standard pronunciation of both words. In German, the breed's country of origin, it's called "German Rex" using the English term rather than a German translation, reflecting the international nature of cat fancy terminology. This linguistic consistency across cultures makes the breed name universally recognizable and eliminates confusion that might arise from translated variations. The name has remained stable since the breed's recognition, providing clear identification without regional variations or alternative designations.
Colloquially, German Rex enthusiasts occasionally use the shortened form "GR" in written communications, particularly in breeder discussions or online forums. However, this abbreviation is far less common than the full breed name, which remains standard in most contexts. Unlike some breeds that develop numerous nicknames, the German Rex is almost always referred to by its complete name, perhaps reflecting the breed's relative rarity and the specific need to distinguish it from other Rex varieties like the Cornish Rex or Devon Rex.
Historically, during the breed's early development in the 1950s and 1960s, some confusion existed regarding the relationship between German Rex and Cornish Rex cats. Early genetics work suggested these might be the same mutation, leading to some temporary nomenclature confusion and crossbreeding attempts. However, subsequent genetic research confirmed that German Rex and Cornish Rex have distinct mutations, despite producing similar physical appearances. This clarification solidified the need for separate breed names and distinct breeding programs, establishing German Rex as a unique breed rather than a geographic variant of Cornish Rex.
The breed is sometimes grouped generically as a "Rex cat" or "Rex breed" when discussing the broader category of curly-coated felines, which includes Cornish Rex, Devon Rex, Selkirk Rex, and others. However, this is a categorical reference rather than a breed nameâlike calling a cat a "longhair" or "shorthair." Each Rex breed maintains its distinct identity, genetics, and physical characteristics, making specific breed identification important for breeding, showing, and care purposes.
No significant alternate names or regional variations exist for the German Rex. The breed's limited geographic distribution and relatively small population have prevented the development of colloquial names in different regions. In countries where the breed is present, it's known simply as German Rex without translation or adaptation. This naming consistency facilitates international communication among breeders and enthusiasts while preserving the breed's German heritage and Rex classification in a clear, unambiguous designation that immediately communicates the breed's essential characteristics and origins.

