When a mare is pregnant, she is said to be "in foal". When the mare gives birth, she is "foaling", and the impending birth is usually stated as "to foal". A newborn horse is "foaled". After a horse is one year old, it is no longer a foal, and is a "yearling".

What is the difference between a mare and a broodmare?

A mare is an adult female horse or other equine. In most cases, a mare is a female horse over the age of three, and a filly is a female horse three and younger. In Thoroughbred horse racing, a mare is defined as a female horse more than four years old. ... A broodmare is a mare used for breeding.

What do you call a pregnant mare?

A mare is pregnant. ... We say, “A mare foaled” when she gives birth. The foal is the young horse after birth. The newborn male is a colt and the new born female is a filly.