Every horse in 2025 Kentucky Derby is a descendent of legendary Secretariat: report

All 21 horses racing in this year's Kentucky Derby are reportedly descendants of the famed racehorse Secretariat, according to The Courier-Journal in Louisville, Kentucky. 

This year marks 52 years since Secretariat won the Triple Crown in record times that still stand today. Now, the horse's legacy will be honored, no matter which horse wins. 

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Secretariat sired more than 660 registered foals during the horse's life.

The racehorse famously had an unusually large heart, according to The A...