The correct name for the breed is a Lacy Dog, or simply Lacy, not Blue Lacy. The best example of a similar naming convention is the Labrador Retriever. People will call a black colored Labrador a Black Lab, but they call a yellow dog a Yellow Lab, even if it came out of two Black Labs. There is no difference between Labs and Lacys when it comes to naming conventions. Though some claim the Blue Lacy name is from a rare blue color gene the dogs carry, no such gene exists. All Lacys have a dilute gene which causes all three color varieties, including Blue Lacys.
According to numerous historical documents, people originally referred to the breed as Lacys or Lacy Dogs. The oldest known article on Lacys was published in the May 1942 issue of The Cattleman. In it a rancher says, “People call a dog a Lacy if he looks at a hog.” A Lacy, not a Blue Lacy. In letters and interviews, Lacy descendants refer to them as Lacy Hog Dogs or simply Lacys. “George and his brothers developed a breed of dog known as the Lacy Hog Dog,” wrote the founder’s granddaughter Helen Lacy Gibbs. Even today, all of the families in the Hill Country who have bred Lacys for decades call them Lacy Dogs. They may call their blue dogs Blue Lacys and their red dogs Red Lacys, but they never call their red dogs Blue Lacys.
The first Lacys were registered with the Animal Research Foundation in 1976 as Texas Lacys. The first breed registry was founded in the 1980s as the Lacy Game Dog Registry. The term Blue Lacy was never used until the 1990s. Though he originally called them Texas Lacy Cowdogs in the 70s, H.C. Wilkes began referring to his dogs as Texas Blue Lacys in the 90s.
It is unclear why the term Blue Lacy caught on for a breed that also includes red and tricolor varieties, but it can be misleading and disproportionately emphasizes their appearance. Despite the marketing value in the Blue Lacy name, the National Lacy Dog Association will continue to follow the original naming convention and use Lacy or Lacy Dog rather than Blue Lacy.