Secretariat was an American Thoroughbred racehorse, who in 1973 became the first U.S. Triple Crown champion in 25 years, setting race records in the Kentucky Derby (1:59 2⁄5) and the Belmont Stakes (2:24) that still stand today. He’s the greatest racehorse of all time, in part due to his freakishly huge 22-pound heart.
Note: The 144th Belmont Stakes was run on Saturday, June 9. But few cared because favorite I’ll Have Another—who could have become the first Triple Crown winner since 1978—was retired on Friday after an injury.
