"[3] In June 2005, Governor Rick Perry signed the legislation adopting the Blue Lacy as "the official State Dog Breed of Texas".

The "Tri" combines a blue base with distinct red markings as appropriate for trim, and white which may appear on the brisket and stretch from chin to groin.

Developed to be both hunting and herding dogs, they display great drive and determination to work with big game and control difficult livestock.

Work they excel at includes herding livestock,[5] blood trailing or tracking,[6] treeing game, running trap lines,[7] and hunting wild hogs.

[8] Modern activities like agility that stress intelligence, passion, speed and nimbleness may be appropriate substitutes for traditional work.

Lacys generally exhibit herding instincts and can be trained to compete in stock dog trials or hog bays.

[10] During recent years, Lacy dogs have also become recognized for their tracking skills, and are used to locate "lost" game animals.

Developed for generations to meet the requirements of ranchers and hunters, they are sturdy enough to withstand tough terrain, difficult working conditions, and both hot and cold weather by Texan standards.

[3] Governor Rick Perry signed the legislation adopting the Lacy as "the official State Dog Breed of Texas" on June 18, 2005.