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.
Any horse under one year old is called a foal. However, foals are commonly referred to as colts or fillies from the time of birth, (foaling). After the age of twelve months â¦the horse is called a yearling. Between one and four years old a male horse is called a colt, while a female is called a filly. After four, the male (if ungelded) is called a stallion; if castrated he's called a gelding. The female after four is called a mare.