There are about 900 breeds of sheep in the world.
A specialty show may be regional or national. A "Best in Show" win at a national specialty show is tremendously prestigious, indicating that the winning dog or bitch triumphed at a contest which attracted entries from the most serious fanciers of that breed in the country or continent. Some specialty shows attract international entries.
Additional points may be awarded to the Best of Winners, or a class dog that goes Best of Breed or Best of Opposite Sex, again depending on the number of dogs competing