Boy foals are called colts, while girl foals are called fillies. Young horses are called colts and fillies up until the age of 3.
Yearlings are colts or fillies who are a year old.
a 'sire' is the father of the foal, a 'dam' is the mother of the foal.
The mother horse, or mare, is pregnant ("in foal") for 11 months. Most mares give birth in the spring to a single baby (foal), although twins are not uncommon. Mares produce milk for their young and will feed them for several months.
The best time of year for a foal to be born is in the spring, when the weather is at its kindest and the lush grass is at its best for the mares.
A newborn foal can stand up within an hour of being born and can keep up with the rest of the herd within 24 hours!
