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.
If the foal is a female, it is a filly. When a filly turns 4 years old, it becomes a mare. A baby horse that is a male is called a colt. When the colt turns 4 years old, it is called a stallion if it can produce foals, and if it is gelded, or can't have foals, it is called a gelding. I hope this helps.I love horses Â· 8 years ago.est Answer: If you do not know the sex of the baby horse or if you are talking generically, then you call the baby a foal. If you know the baby is male then you call it a colt. If the colt has been fixed (gelded like neutering a dog) you call it a gelding.