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.
A female baby horse is a filly and a male is a called a colt. All colts and fillies may be called foals. Foal is the correct way to refer to any young horse still with a mare, who's gender is not known. Very young horses may be called filly foal or colt foal.