Before Kentucky Derby and Preakness winner California Chrome could race, his name had to be approved by The Jockey Club, a breed registry that maintains a database of more than 400,000 names certified to thoroughbreds in the breeding and racing industries of the United States, Canada and Puerto Rico. Here's how the naming process of thoroughbreds works.
SOURCE: The Jockey Club, International Federation of Horseracing Authorities. GRAPHIC: Ted Mellnik, Cristina Rivero and Ben Chartoff - The Washington Post. Published June 7, 2014.