At a Milwaukee post office, a woman complained to the clerk that a Pony Express rider could get a letter from Milwaukee to St. Louis in two days, and now it takes three.
"I'd like to know why," she scoffed.
The clerk thought a moment and then suggested,
"The horses are a lot older now?"
I bless the hoss from hoof to head -
From head to hoof, and tale to mane! -
I bless the hoss, as I have said,
From head to hoof, and back again!
~James Whitcomb Riley
A horse is usually not considered to be a "horse" until it is 5 years old. Before that, males are known as colts and females are known as fillies. However, it is still acceptable to call a colt or filly a horse.