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.
The largest and most prestigious dog show in America is the Westminster Kennel Club Dog Show, was established in 1877 and is held annually at Madison Square Garden in New York City.