Music video by Enrique Iglesias performing Tonight (I'm Lovin' You). (C) 2011 Universal International Music B.V. 1  Music.
Some people think a baby horse is called a pony. In fact, a baby horse is called a foal. A foal is a horse that is younger than one year old. A pony can be any age! Ponies have short legs and wider bodies than full-sized horses. Ponies often have thicker manes too! People can ride ponies, just like they can ride full-sized horses.
Female horses are born as a Filly. They become Mares on their third year even thought they may reach sexual maturity before then. Itâs very unusual (and costly!) for Mares to be spayed, but it can be done and such a horse would then be called a âSpayed Mareâ.