Mare foaling: stages, monitoring, and when to intervene
Foaling is one of the fastest and most critical moments in the equine reproductive cycle. Unlike other mammals, mares have an explosive birth: they go from the first contraction to the expulsion of the foal in 15-30 minutes. This speed requires knowledge of the stages, careful monitoring, and knowing when to intervene or urgently call the veterinarian.
Phase 1 — Uterine preparation
The first few hours are subtle: the mare appears restless, sweats on her flanks and sides, looks at her belly, and alternates positions. This phase can last between 1 and 4 hours. This is the time to have the veterinarian on call, the bedding clean and abundant, and the tail bandaged. There is no need to intervene yet: forcing the mare to lie down or moving her is counterproductive.
Phase 2 — Foal expulsion
When the amniotic sac breaks (clear fluid), the active phase begins. The mare lies down, strains with visible contractions, and usually expels the foal in 15-30 minutes. If after 30 minutes there is no progress, or dark red fluid appears instead of clear, it is a veterinary emergency. The foal should present with both front legs extended and its head resting on them.
Phase 3 — Placenta expulsion
After birth, the mare expels the placenta between 30 minutes and 3 hours. It should be collected in a bag to show to the veterinarian: a retained placenta for more than 3 hours is an emergency that can lead to septicemia. Meanwhile, the foal should stand up within 2 hours and nurse within 4 hours.
Respectful monitoring
A foaling mare needs peace and quiet. Ideally, you should monitor from outside the stall without constantly entering. Equine surveillance cameras are now an accessible tool that avoids interrupting the natural process. Do not pull the foal during foaling unless instructed by the veterinarian; abnormal positions require a professional.
When to call the veterinarian immediately
Dark red or brown fluid instead of clear amniotic fluid. Mare with unproductive contractions for more than 30 minutes. Foal presented in an abnormal position (only one leg, head backward). Placenta not expelled within 3 hours. Foal that does not stand within 2 hours. Foal that does not nurse within 4-6 hours. Each of these points can save the life of the mare or the foal.
Frequently Asked Questions
What time of day do mares usually foal?
The vast majority foal at night, between 10:00 PM and 4:00 AM. This is an evolutionary behavior for protection against predators.
Can I attend the foaling if I am not a professional?
You can monitor and alert the veterinarian. Active interventions (pulling the foal, handling the placenta) should be performed by professionals unless in extreme emergencies.
When should the foal consume colostrum?
Within the first 4-6 hours. After 12-24 hours, the foal's intestinal lining stops absorbing immunoglobulins, and immune protection is lost even if it nurses later.
