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.
Answer: All newborn horses are foals A colt is an uncastrated male horse less than four years old A filly is a female horse less than four years old A mare is an older female horse of breeding age   Baby horses are called foals. Generally, a baby horse is called a foal. young girl horse is called a filly, and a young male is called a colt. An adult female is called a mare, and an un-castrated adult male is called a stallion. A castrated adu â¦ lt male is called a gelding.