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.
Confidence votes 5.0K. A baby horse is called a foal. A baby female is called a filly-foal and a baby male is called a colt-foal. Once they are weaned they are called foal, filly, and colt, respectively until three years old, when they become horse, mare, and stallion, (or gelding) respectively.Other contributors have said: A filly is a female of racing age. baby horse is called a foal. A baby female is called a filly-foal and a baby male is called a colt-foal.