A Quarter Horse legend

I came across this poem at http://www.horsepoemsquotes.sportmorganhorses.com/category/horse-poems/
It's about a foundation Quarter Horse that most of my horses trace back to.

Peter McCue ~ Anonymous
(A Quarter Horse from the 1800’s)

Ain’t you never heard what Peter done?
Run the quarter-mile in twenty-one
And he run it backwards in twenty flat;
Why, stranger, where have you been at?

What else could he do,This Peter McCue?
He could gallop the range with tireless legs,
He could build a fire and scramble the eggs;
Though he never learned to subtract or devide,
He was mighty good when he multiplied.