There are about 900 breeds of sheep in the world.
The sit for exam is a modified version of the Stand for Exam. It is generally used in novice level classes and requires the handler to order the dog to sit and then to move away from the dog the length of the leash. The judge will then approach the dog and pet the dog's head.
At least two wins must be a set of three or more points ("majors"), under two different judges; at least one additional win under a third judge is also required.