Perhaps not coincidentally, Dynaforma, who sired Barbaro, died April 23rd, the date Barbaro was foaled.
The Daily Racing Form reports:
Dynaformer — sire of 2006 Kentucky Derby winner Barbaro, multi-million-dollar earner Perfect Drift, and three-time steeplechase champion McDynamo — has died two weeks after an aortic valve rupture prompted Three Chimneys Farm to pension him. A 27-year-old son of Roberto, Dynaformer was euthanized at about noon Sunday, the Midway, Ky., farm announced.
Three Chimneys president Case Clay had said earlier this year that the farm would limit the popular stallion’s book to 40 mares this year, but he was abruptly pensioned April 14 when the heart problem became apparent.
Three Chimneys veterinarian Dr. Jim Morehead said: “Dynaformer told us when it was his time to go. Amazingly, he had been comfortable after his initial crisis on April 14 and had been able to go to his paddock daily, A normal horse would not have survived his initial cardiac episode. He did everything in his terms, including deciding when he’s had enough.”
Three Chimneys announced that the public is invited to pay respects to Dynaformer during the Annual Three Chimneys Kentucky Derby week open house on Thursday between 10 a.m. and 1 p.m. A memorial service will take place at 12:30 p.m. that day in the stallion cemetery.
Image Source: Three Chimneys. Not filed with source report.
Tuesday's Horse 
RIP thankyou for not sending him to slaughter.
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RIP. I remember hearing Barbaro’s vet say almost the same thing: that Barbaro let him know that he’d had enough with all their ministrations by, for the very first time, nipping the vet. They are so much smarter than we are… sleep with the angels, Dynaformer.
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RIP dear dynaformer , you will be missed by all……………………………
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