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.
When a foal reaches 1 year old it is called a yearling. When a horse reaches its second birthday, it is typically referred to by its adult name: mare for females and stallion for males. Baby horses are often mistakenly called ponies, but this is incorrect. Pony is the name given to horses that are small in size but are still full-grown.