The United States Police Canine Association is the biggest and oldest organization of its kind. “Ever Striving for the Betterment of All Police K-9”, the organization is a combination of the Police Canine Association and the United States Canine Association. The two groups merged in 1971.

The Association gathers at events twice annually. The first takes place in the summer, during which new training methods and ideas are presented, followed later by the National Dog Trials. The trials feature the best trained dogs from all over the world, and are judged by police officials. The dog trials have a real impact on the calibration of training techniques.