Secretariat also had what’s called the “x-factor,” a gene located on the X-chromosome that causes an unusually large heart.* Fiorina says she identifies with this. “It’s about the size of his figurative heart, too.” **Q: What is the difference between Fiorina and a horse?
A: Incitatus did make it into the Senate.
* The "X-linked mutation" theory seems to be an article of faith among a small circle of horseflesh enthusiasts, largely unsupported by evidence. No gene has been identified and no-one is looking for one.
** Secretariat's "figurative heart"? I can't even.