Secretariat's Heart
(Above photo credit: Churchill Downs Racetrack)
Happy Valentine's Day! If you want to hear a story about a huge heart, look no further than the great Secretariat. The average Thoroughbred's heart weighs about 8.5 lbs. Secretariat's heart weighed nearly three times that number! Watch this video to learn how Secretariat's big heart likely contributed to his stamina on the racetrack.