Jack Russell terrier trials are perhaps the most exciting of all the terrier events. There are two types of competitions: course a lure and hurdles. In course a lure, a cloth lure is guided through an elaborate system of pulleys that motivates the dog's natural instinct to chase. The courses these Jacks compete on is much like an agility course, full of sharp turns, jumps, tunnels and hurdles.

Hurdle racing consists of up to six dogs running in a flat-out sprint to the finish line with several hurdles set-up before they reach the end. It is fast, furious and over in the blink of an eye. The first dog to the finish line wins.

This is the dog competition that everyone knows and loves. Disc dog is broken down into three rounds. Round one is "fetch." Using up to three discs, the handler tries to throw as many discs as possible in 45 seconds. Points are awarded based on distance. All points are combined for a total score. Round two is "jam." The dog and handler have 10 discs and 90 seconds to deliver the freestyle goods. Round three is "race." This is a race for the disc with two dog-and-handler teams striving to make two catches of 15 yards minimum and return across the finish line.

Teams are judged on presentation (the overall look and feel of the routine), accuracy (the number of successful catches during the jam) and variation (the type of throws and releases, and how much it was varied during the competition). After all three events have been successfully completed, the points are tallied from all rounds and the winner is announced.