The term "foal" specifically refers to the young offspring of a horse. But other animals have similar terms for their young:
* Colt: A male foal
* Filly: A female foal
* Foal: A young horse (either male or female)
* Pony foal: A young pony
* Mule foal: The offspring of a male donkey and a female horse
* Hinny foal: The offspring of a male horse and a female donkey
Other animals with similar terms for their young include:
* Zebra foal: The young of a zebra
* Donkey foal: The young of a donkey
* Llama foal: The young of a llama
* Alpaca foal: The young of an alpaca
So, while "foal" specifically refers to a young horse, there are plenty of other animals with young that have similar names!