No need for sheep in this herding game. It’s also something like canine soccer. The formal name for the game is Treibbell – or ball herding. Dogs need to push balls toward a goal in a timed exercise. The balls vary in size depending on the size of the dog from teacups to vary large dogs.
The sport is a low impact alternative to agility. In this case the dogs gets exercise without the climbing and jumping. The handlers remain in place.
The sport began in Germany and is taking hold in the United States. One of the governing associations for the sport is the American Treibball Association. Here is a ‘how to’ video.