A Working Bouv, doing a Schutzhund Trial.

Here is a video of a Bouv doing his thing on the Schutzhund field.

From Wikipedia

Schutzhund (German for "protection dog") is a dog sport that was developed in Germany in the early 1900s as a breed suitability test for the German Shepherd Dog. The test would determine if the dog displayed the appropriate traits and characteristics of a proper working German Shepherd Dog. Today, it is used as a sport where many breeds other than German Shepherd Dogs can compete, but it is a demanding test for any dog that few can pass. 

Schutzhund tests dogs of all breeds for the traits necessary for police-type work. Dogs that pass Schutzhund tests should be suitable for a wide variety of tasks: police work, specific odor detection, search and rescue, and many others. The purpose of Schutzhund is to identify dogs that have or do not have the character traits required for these demanding jobs. Some of those traits are:

• Strong desire to work
• Courage
• Intelligence
• Trainability
• Strong bond to the handler
• Perseverance
• Protective Instinct
• Sense of Smell

Schutzhund tests for these traits. It also tests for physical traits such as strength, endurance, agility, and scenting ability. The goal of Schutzhund is to illuminate the character and ability of a dog through training. Breeders can use this insight to determine how and whether to use the dog in producing the next generation of working dogs.