Abortion
Abortion is the term used to describe the loss of a fetus before term, in the horse this means that the mare loses the foal before 300 days. After 300 days the loss of the foal tends to be termed still-birth, prematurity or dysmaturity. If the abortion occurs very early in the pregnancy (less than 100 days) there may be no signs that the mare has aborted, she may just come back into season. If you think your mare is aborting, call your veterinarian immediately.
Waxing up of the mammary glands is a sign a mare is about to give birth
©Derek Knottenbelt