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.
What is a horse baby called? A foal is a horse of any gender that still suckles from its mother. A weanling is a horse of any gender that is being weaned from it's mother. A yearling is a horse of any genâ¦der between 1 and 2 years old. A filly is a girl horse less than 5 years old. A colt is a boy horse less than 5 years old.