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.
In the American Kennel Club, a dog needs 15 points to become a Champion, with each win gaining anywhere from zero to five points depending on the number of dogs competing and the area where the show is held.