The aim of the sport is for the dog to get eight large exercise balls into a goal. The eight balls are initially set up in a triangle formation similar to
billiards, and the dog's handler stays in one spot near the goal. Using only whistles, verbal commands, or hand signals, the handler must communicate with the dog to get it to push the balls into the goal. The balls must be put into the goal in a particular order, and there is a time limit. Treibball balls range from 45 to 75 centimeters in diameter, and are known as "rolling sheep". == See also ==