It usually costs half it would to board a horse, but it also depends on how good the horse is.
That's not exactly... real. That type of thing doesn't exist and I don't think will exist. Ever.
it is a centaur
That's a Centaur, a mythological creature.A Centaur is a creature in Greek mythology. It has the upper body of a human, but below the waist it has the body of a horse. Centaurs are very strong and...
A half human half horse is a centaur, a Greek mythical creature.